merge FeePaid event into CCIPMessageSent (#1456)

## Motivation
Not sure actually why this was needed. Request was [made
here](https://smartcontract-it.atlassian.net/browse/CCIP-3446?atlOrigin=eyJpIjoiMTQ4ODMwNzU2N2I3NDI0NGE0ZDhiOTIyZTYwOTNjN2IiLCJwIjoiaiJ9).

This is the 2nd version, that alters the MessageSent struct. First
version [here](#1452).

## Solution
Merge fields from FeePaid event into CCIPMessageSent event

contracts/gas-snapshots/ccip.gas-snapshot

@@ -572,8 +572,8 @@ MultiOCR3Base_transmit:test_UnAuthorizedTransmitter_Revert() (gas: 24234)
 MultiOCR3Base_transmit:test_UnauthorizedSigner_Revert() (gas: 61275)
 MultiOCR3Base_transmit:test_UnconfiguredPlugin_Revert() (gas: 39933)
 MultiOCR3Base_transmit:test_ZeroSignatures_Revert() (gas: 33049)
-MultiOnRampTokenPoolReentrancy:test_OnRampTokenPoolReentrancy_Success() (gas: 233778)
-MultiRampsE2E:test_E2E_3MessagesMMultiOffRampSuccess_gas() (gas: 1504663)
+MultiOnRampTokenPoolReentrancy:test_OnRampTokenPoolReentrancy_Success() (gas: 233701)
+MultiRampsE2E:test_E2E_3MessagesMMultiOffRampSuccess_gas() (gas: 1500580)
 NonceManager_NonceIncrementation:test_getIncrementedOutboundNonce_Success() (gas: 37934)
 NonceManager_NonceIncrementation:test_incrementInboundNonce_Skip() (gas: 23706)
 NonceManager_NonceIncrementation:test_incrementInboundNonce_Success() (gas: 38778)
@@ -585,15 +585,15 @@ NonceManager_OffRampUpgrade:test_UpgradedOffRampNonceSkipsIfMsgInFlight_Success(
 NonceManager_OffRampUpgrade:test_UpgradedSenderNoncesReadsPreviousRampTransitive_Success() (gas: 249120)
 NonceManager_OffRampUpgrade:test_UpgradedSenderNoncesReadsPreviousRamp_Success() (gas: 237027)
 NonceManager_OffRampUpgrade:test_Upgraded_Success() (gas: 153748)
-NonceManager_OnRampUpgrade:test_UpgradeNonceNewSenderStartsAtZero_Success() (gas: 168959)
-NonceManager_OnRampUpgrade:test_UpgradeNonceStartsAtV1Nonce_Success() (gas: 221148)
-NonceManager_OnRampUpgrade:test_UpgradeSenderNoncesReadsPreviousRamp_Success() (gas: 126861)
-NonceManager_OnRampUpgrade:test_Upgrade_Success() (gas: 107723)
-NonceManager_applyPreviousRampsUpdates:test_MultipleRampsUpdates() (gas: 123207)
+NonceManager_OnRampUpgrade:test_UpgradeNonceNewSenderStartsAtZero_Success() (gas: 168256)
+NonceManager_OnRampUpgrade:test_UpgradeNonceStartsAtV1Nonce_Success() (gas: 219631)
+NonceManager_OnRampUpgrade:test_UpgradeSenderNoncesReadsPreviousRamp_Success() (gas: 126745)
+NonceManager_OnRampUpgrade:test_Upgrade_Success() (gas: 106975)
+NonceManager_applyPreviousRampsUpdates:test_MultipleRampsUpdates() (gas: 123102)
 NonceManager_applyPreviousRampsUpdates:test_PreviousRampAlreadySetOffRamp_Revert() (gas: 43079)
 NonceManager_applyPreviousRampsUpdates:test_PreviousRampAlreadySetOnRampAndOffRamp_Revert() (gas: 64408)
 NonceManager_applyPreviousRampsUpdates:test_PreviousRampAlreadySetOnRamp_Revert() (gas: 42943)
-NonceManager_applyPreviousRampsUpdates:test_SingleRampUpdate() (gas: 66696)
+NonceManager_applyPreviousRampsUpdates:test_SingleRampUpdate() (gas: 66666)
 NonceManager_applyPreviousRampsUpdates:test_ZeroInput() (gas: 12070)
 NonceManager_typeAndVersion:test_typeAndVersion() (gas: 9705)
 OCR2BaseNoChecks_setOCR2Config:test_FMustBePositive_Revert() (gas: 12210)
@@ -758,51 +758,51 @@ OffRamp_trialExecute:test_trialExecute_Success() (gas: 277894)
 OnRampTokenPoolReentrancy:test_OnRampTokenPoolReentrancy_Success() (gas: 390842)
 OnRamp_applyAllowListUpdates:test_applyAllowListUpdates_InvalidAllowListRequestDisabledAllowListWithAdds() (gas: 18030)
 OnRamp_applyAllowListUpdates:test_applyAllowListUpdates_Revert() (gas: 67426)
-OnRamp_applyAllowListUpdates:test_applyAllowListUpdates_Success() (gas: 325124)
-OnRamp_applyDestChainConfigUpdates:test_ApplyDestChainConfigUpdates_Success() (gas: 65227)
-OnRamp_applyDestChainConfigUpdates:test_ApplyDestChainConfigUpdates_WithInvalidChainSelector_Revert() (gas: 13446)
-OnRamp_constructor:test_Constructor_InvalidConfigChainSelectorEqZero_Revert() (gas: 95048)
-OnRamp_constructor:test_Constructor_InvalidConfigNonceManagerEqAddressZero_Revert() (gas: 92990)
-OnRamp_constructor:test_Constructor_InvalidConfigRMNProxyEqAddressZero_Revert() (gas: 98023)
-OnRamp_constructor:test_Constructor_InvalidConfigTokenAdminRegistryEqAddressZero_Revert() (gas: 93046)
-OnRamp_constructor:test_Constructor_Success() (gas: 2750875)
-OnRamp_forwardFromRouter:test_ForwardFromRouterExtraArgsV2AllowOutOfOrderTrue_Success() (gas: 115146)
-OnRamp_forwardFromRouter:test_ForwardFromRouterExtraArgsV2_Success() (gas: 145969)
-OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessCustomExtraArgs() (gas: 145545)
-OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessEmptyExtraArgs() (gas: 143772)
-OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessLegacyExtraArgs() (gas: 145763)
-OnRamp_forwardFromRouter:test_ForwardFromRouter_Success() (gas: 145139)
-OnRamp_forwardFromRouter:test_ForwardFromRouter_Success_ConfigurableSourceRouter() (gas: 145974)
-OnRamp_forwardFromRouter:test_InvalidExtraArgsTag_Revert() (gas: 38593)
-OnRamp_forwardFromRouter:test_MessageInterceptionError_Revert() (gas: 143056)
-OnRamp_forwardFromRouter:test_MesssageFeeTooHigh_Revert() (gas: 36706)
-OnRamp_forwardFromRouter:test_MultiCannotSendZeroTokens_Revert() (gas: 36509)
+OnRamp_applyAllowListUpdates:test_applyAllowListUpdates_Success() (gas: 325083)
+OnRamp_applyDestChainConfigUpdates:test_ApplyDestChainConfigUpdates_Success() (gas: 65095)
+OnRamp_applyDestChainConfigUpdates:test_ApplyDestChainConfigUpdates_WithInvalidChainSelector_Revert() (gas: 13422)
+OnRamp_constructor:test_Constructor_InvalidConfigChainSelectorEqZero_Revert() (gas: 94996)
+OnRamp_constructor:test_Constructor_InvalidConfigNonceManagerEqAddressZero_Revert() (gas: 92938)
+OnRamp_constructor:test_Constructor_InvalidConfigRMNProxyEqAddressZero_Revert() (gas: 97971)
+OnRamp_constructor:test_Constructor_InvalidConfigTokenAdminRegistryEqAddressZero_Revert() (gas: 92972)
+OnRamp_constructor:test_Constructor_Success() (gas: 2734391)
+OnRamp_forwardFromRouter:test_ForwardFromRouterExtraArgsV2AllowOutOfOrderTrue_Success() (gas: 114527)
+OnRamp_forwardFromRouter:test_ForwardFromRouterExtraArgsV2_Success() (gas: 145328)
+OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessCustomExtraArgs() (gas: 144925)
+OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessEmptyExtraArgs() (gas: 143086)
+OnRamp_forwardFromRouter:test_ForwardFromRouterSuccessLegacyExtraArgs() (gas: 145122)
+OnRamp_forwardFromRouter:test_ForwardFromRouter_Success() (gas: 144520)
+OnRamp_forwardFromRouter:test_ForwardFromRouter_Success_ConfigurableSourceRouter() (gas: 144604)
+OnRamp_forwardFromRouter:test_InvalidExtraArgsTag_Revert() (gas: 38554)
+OnRamp_forwardFromRouter:test_MessageInterceptionError_Revert() (gas: 143051)
+OnRamp_forwardFromRouter:test_MesssageFeeTooHigh_Revert() (gas: 36596)
+OnRamp_forwardFromRouter:test_MultiCannotSendZeroTokens_Revert() (gas: 36527)
 OnRamp_forwardFromRouter:test_OriginalSender_Revert() (gas: 18291)
-OnRamp_forwardFromRouter:test_Paused_Revert() (gas: 38454)
-OnRamp_forwardFromRouter:test_Permissions_Revert() (gas: 23663)
-OnRamp_forwardFromRouter:test_ShouldIncrementNonceOnlyOnOrdered_Success() (gas: 186202)
-OnRamp_forwardFromRouter:test_ShouldIncrementSeqNumAndNonce_Success() (gas: 212587)
-OnRamp_forwardFromRouter:test_ShouldStoreLinkFees() (gas: 125127)
-OnRamp_forwardFromRouter:test_ShouldStoreNonLinkFees() (gas: 141767)
-OnRamp_forwardFromRouter:test_SourceTokenDataTooLarge_Revert() (gas: 3618195)
+OnRamp_forwardFromRouter:test_Paused_Revert() (gas: 38431)
+OnRamp_forwardFromRouter:test_Permissions_Revert() (gas: 23640)
+OnRamp_forwardFromRouter:test_ShouldIncrementNonceOnlyOnOrdered_Success() (gas: 183954)
+OnRamp_forwardFromRouter:test_ShouldIncrementSeqNumAndNonce_Success() (gas: 210338)
+OnRamp_forwardFromRouter:test_ShouldStoreLinkFees() (gas: 146154)
+OnRamp_forwardFromRouter:test_ShouldStoreNonLinkFees() (gas: 160259)
+OnRamp_forwardFromRouter:test_SourceTokenDataTooLarge_Revert() (gas: 3613942)
 OnRamp_forwardFromRouter:test_UnAllowedOriginalSender_Revert() (gas: 24010)
-OnRamp_forwardFromRouter:test_UnsupportedToken_Revert() (gas: 75826)
-OnRamp_forwardFromRouter:test_forwardFromRouter_UnsupportedToken_Revert() (gas: 38559)
-OnRamp_forwardFromRouter:test_forwardFromRouter_WithInterception_Success() (gas: 280050)
-OnRamp_getFee:test_EmptyMessage_Success() (gas: 98757)
-OnRamp_getFee:test_EnforceOutOfOrder_Revert() (gas: 64779)
-OnRamp_getFee:test_GetFeeOfZeroForTokenMessage_Success() (gas: 86359)
-OnRamp_getFee:test_NotAFeeTokenButPricedToken_Revert() (gas: 35185)
-OnRamp_getFee:test_SingleTokenMessage_Success() (gas: 113916)
-OnRamp_getFee:test_Unhealthy_Revert() (gas: 17171)
-OnRamp_getSupportedTokens:test_GetSupportedTokens_Revert() (gas: 10510)
-OnRamp_getTokenPool:test_GetTokenPool_Success() (gas: 35372)
-OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigFeeAggregatorEqAddressZero_Revert() (gas: 11581)
+OnRamp_forwardFromRouter:test_UnsupportedToken_Revert() (gas: 75866)
+OnRamp_forwardFromRouter:test_forwardFromRouter_UnsupportedToken_Revert() (gas: 38599)
+OnRamp_forwardFromRouter:test_forwardFromRouter_WithInterception_Success() (gas: 279390)
+OnRamp_getFee:test_EmptyMessage_Success() (gas: 98513)
+OnRamp_getFee:test_EnforceOutOfOrder_Revert() (gas: 64645)
+OnRamp_getFee:test_GetFeeOfZeroForTokenMessage_Success() (gas: 86177)
+OnRamp_getFee:test_NotAFeeTokenButPricedToken_Revert() (gas: 35097)
+OnRamp_getFee:test_SingleTokenMessage_Success() (gas: 113639)
+OnRamp_getFee:test_Unhealthy_Revert() (gas: 17061)
+OnRamp_getSupportedTokens:test_GetSupportedTokens_Revert() (gas: 10474)
+OnRamp_getTokenPool:test_GetTokenPool_Success() (gas: 35348)
+OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigFeeAggregatorEqAddressZero_Revert() (gas: 11536)
 OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigFeeQuoterEqAddressZero_Revert() (gas: 13195)
 OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigInvalidConfig_Revert() (gas: 11522)
 OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigOnlyOwner_Revert() (gas: 16850)
 OnRamp_setDynamicConfig:test_setDynamicConfig_InvalidConfigReentrancyGuardEnteredEqTrue_Revert() (gas: 13265)
-OnRamp_setDynamicConfig:test_setDynamicConfig_Success() (gas: 56460)
+OnRamp_setDynamicConfig:test_setDynamicConfig_Success() (gas: 56369)
 OnRamp_withdrawFeeTokens:test_WithdrawFeeTokens_Success() (gas: 97302)
 PingPong_ccipReceive:test_CcipReceive_Success() (gas: 151349)
 PingPong_plumbing:test_OutOfOrderExecution_Success() (gas: 20310)

contracts/src/v0.8/ccip/libraries/Internal.sol

@@ -342,6 +342,7 @@ library Internal {
     bytes extraArgs; // destination-chain specific extra args, such as the gasLimit for EVM chains
     address feeToken; // fee token
     uint256 feeTokenAmount; // fee token amount
+    uint256 feeValueJuels; // fee amount in Juels
     EVM2AnyTokenTransfer[] tokenAmounts; // array of tokens and amounts to transfer
   }
 

contracts/src/v0.8/ccip/onRamp/OnRamp.sol

@@ -46,7 +46,6 @@ contract OnRamp is IEVM2AnyOnRampClient, ITypeAndVersion, OwnerIsCreator {
   event DestChainConfigSet(
     uint64 indexed destChainSelector, uint64 sequenceNumber, IRouter router, bool allowListEnabled
   );
-  event FeePaid(address indexed feeToken, uint256 feeValueJuels);
   event FeeTokenWithdrawn(address indexed feeAggregator, address indexed feeToken, uint256 amount);
   /// RMN depends on this event, if changing, please notify the RMN maintainers.
   event CCIPMessageSent(uint64 indexed destChainSelector, Internal.EVM2AnyRampMessage message);
@@ -211,6 +210,7 @@ contract OnRamp is IEVM2AnyOnRampClient, ITypeAndVersion, OwnerIsCreator {
       receiver: message.receiver,
       feeToken: message.feeToken,
       feeTokenAmount: feeTokenAmount,
+      feeValueJuels: 0, // calculated later
       // Should be populated via lock / burn pool calls
       tokenAmounts: new Internal.EVM2AnyTokenTransfer[](message.tokenAmounts.length)
     });
@@ -224,17 +224,15 @@ contract OnRamp is IEVM2AnyOnRampClient, ITypeAndVersion, OwnerIsCreator {
 
     // Convert message fee to juels and retrieve converted args
     // Validate pool return data after it is populated (view function - no state changes)
-    (
-      uint256 msgFeeJuels,
-      bool isOutOfOrderExecution,
-      bytes memory convertedExtraArgs,
-      bytes[] memory destExecDataPerToken
-    ) = IFeeQuoter(s_dynamicConfig.feeQuoter).processMessageArgs(
+    bool isOutOfOrderExecution;
+    bytes memory convertedExtraArgs;
+    bytes[] memory destExecDataPerToken;
+    (newMessage.feeValueJuels, isOutOfOrderExecution, convertedExtraArgs, destExecDataPerToken) = IFeeQuoter(
+      s_dynamicConfig.feeQuoter
+    ).processMessageArgs(
       destChainSelector, message.feeToken, feeTokenAmount, message.extraArgs, newMessage.tokenAmounts, tokenAmounts
     );
 
-    emit FeePaid(message.feeToken, msgFeeJuels);
-
     newMessage.header.nonce = isOutOfOrderExecution
       ? 0
       : INonceManager(i_nonceManager).getIncrementedOutboundNonce(destChainSelector, originalSender);

contracts/src/v0.8/ccip/test/e2e/MultiRampsEnd2End.t.sol

@@ -251,14 +251,17 @@ contract MultiRampsE2E is OnRampSetup, OffRampSetup {
     IERC20(s_sourceTokens[0]).approve(address(router), i_tokenAmount0 + router.getFee(DEST_CHAIN_SELECTOR, message));
     IERC20(s_sourceTokens[1]).approve(address(router), i_tokenAmount1);
 
+    uint256 feeAmount = router.getFee(DEST_CHAIN_SELECTOR, message);
+
     message.receiver = abi.encode(address(s_receiver));
     Internal.EVM2AnyRampMessage memory msgEvent = _messageToEvent(
       message,
       sourceChainSelector,
       DEST_CHAIN_SELECTOR,
       expectedSeqNum,
       nonce,
-      router.getFee(DEST_CHAIN_SELECTOR, message),
+      feeAmount,
+      feeAmount,
       OWNER,
       metadataHash,
       tokenAdminRegistry

contracts/src/v0.8/ccip/test/feeQuoter/FeeQuoterSetup.t.sol

@@ -367,6 +367,7 @@ contract FeeQuoterFeeSetup is FeeQuoterSetup {
     uint64 seqNum,
     uint64 nonce,
     uint256 feeTokenAmount,
+    uint256 feeValueJuels,
     address originalSender,
     bytes32 metadataHash,
     TokenAdminRegistry tokenAdminRegistry
@@ -388,6 +389,7 @@ contract FeeQuoterFeeSetup is FeeQuoterSetup {
       extraArgs: Client._argsToBytes(extraArgs),
       feeToken: message.feeToken,
       feeTokenAmount: feeTokenAmount,
+      feeValueJuels: feeValueJuels,
       tokenAmounts: new Internal.EVM2AnyTokenTransfer[](message.tokenAmounts.length)
     });
 

contracts/src/v0.8/ccip/test/onRamp/OnRamp.t.sol

@@ -287,7 +287,8 @@ contract OnRamp_forwardFromRouter is OnRampSetup {
     IERC20(s_sourceFeeToken).transferFrom(OWNER, address(s_onRamp), feeAmount);
 
     vm.expectEmit();
-    emit OnRamp.FeePaid(s_sourceFeeToken, feeAmount);
+    emit OnRamp.CCIPMessageSent(DEST_CHAIN_SELECTOR, _messageToEvent(message, 1, 1, feeAmount, OWNER));
+
     s_onRamp.forwardFromRouter(DEST_CHAIN_SELECTOR, message, feeAmount, OWNER);
 
     assertEq(IERC20(s_sourceFeeToken).balanceOf(address(s_onRamp)), feeAmount);
@@ -307,7 +308,8 @@ contract OnRamp_forwardFromRouter is OnRampSetup {
     uint256 expectedJuels = (feeAmount * conversionRate) / 1e18;
 
     vm.expectEmit();
-    emit OnRamp.FeePaid(s_sourceTokens[1], expectedJuels);
+    emit OnRamp.CCIPMessageSent(DEST_CHAIN_SELECTOR, _messageToEvent(message, 1, 1, feeAmount, expectedJuels, OWNER));
+
     s_onRamp.forwardFromRouter(DEST_CHAIN_SELECTOR, message, feeAmount, OWNER);
 
     assertEq(IERC20(s_sourceTokens[1]).balanceOf(address(s_onRamp)), feeAmount);
@@ -352,8 +354,6 @@ contract OnRamp_forwardFromRouter is OnRampSetup {
     Internal.EVM2AnyRampMessage memory expectedEvent = _messageToEvent(message, 1, 1, feeTokenAmount, originalSender);
 
     vm.expectEmit();
-    emit OnRamp.FeePaid(s_sourceFeeToken, feeTokenAmount);
-    vm.expectEmit(false, false, false, true);
     emit OnRamp.CCIPMessageSent(DEST_CHAIN_SELECTOR, expectedEvent);
 
     // Assert the message Id is correct

contracts/src/v0.8/ccip/test/onRamp/OnRampSetup.t.sol

@@ -64,20 +64,41 @@ contract OnRampSetup is FeeQuoterFeeSetup {
     });
   }
 
+  /// @dev a helper function to compose EVM2AnyRampMessage messages
+  /// @dev it is assummed that LINK is the payment token because feeTokenAmount == feeValueJuels
   function _messageToEvent(
     Client.EVM2AnyMessage memory message,
     uint64 seqNum,
     uint64 nonce,
     uint256 feeTokenAmount,
     address originalSender
-  ) public view returns (Internal.EVM2AnyRampMessage memory) {
+  ) internal view returns (Internal.EVM2AnyRampMessage memory) {
+    return _messageToEvent(
+      message,
+      seqNum,
+      nonce,
+      feeTokenAmount, // fee paid
+      feeTokenAmount, // converstion to jules is the same
+      originalSender
+    );
+  }
+
+  function _messageToEvent(
+    Client.EVM2AnyMessage memory message,
+    uint64 seqNum,
+    uint64 nonce,
+    uint256 feeTokenAmount,
+    uint256 feeValueJuels,
+    address originalSender
+  ) internal view returns (Internal.EVM2AnyRampMessage memory) {
     return _messageToEvent(
       message,
       SOURCE_CHAIN_SELECTOR,
       DEST_CHAIN_SELECTOR,
       seqNum,
       nonce,
       feeTokenAmount,
+      feeValueJuels,
       originalSender,
       s_metadataHash,
       s_tokenAdminRegistry