Add support for Google Hangouts / Google Meet

app/brave_generated_resources.grd

@@ -337,6 +337,9 @@ By installing this extension, you are agreeing to the Google Widevine Terms of U
       <message name="IDS_SETTINGS_WEBTORRENT_ENABLED_DESC" desc="The description for WebTorrent switch in settings">
         Uses WebTorrent to display torrents directly in the browser. Supports torrent files and magnet links.
       </message>
+     <message name="IDS_SETTINGS_HANGOUTS_ENABLED_DESC" desc="The description for Hangouts switch in settings">
+        Uses Hangouts component to enable screen sharing and other features in the browser.
+      </message>
       <message name="IDS_SETTINGS_MANAGE_EXTENSIONS_LABEL" desc="The label of manage extensions link in settings">
         Manage Extensions
       </message>

browser/brave_content_browser_client_browsertest.cc

@@ -10,6 +10,7 @@
 #include "brave/common/extensions/extension_constants.h"
 #include "brave/common/pref_names.h"
 #include "brave/components/brave_rewards/browser/buildflags/buildflags.h"
+#include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
@@ -27,6 +28,13 @@
 
 class BraveContentBrowserClientTest : public InProcessBrowserTest {
   public:
+    void SetUp() override {
+      // This is needed because component extensions are not added by default
+      // without it.  Theyu are found to interfere with tests otherwise. It's needed
+      // for loading the hangouts extension of which there are tests for below.
+      extensions::ComponentLoader::EnableBackgroundExtensionsForTesting();
+      InProcessBrowserTest::SetUp();
+    }
     void SetUpOnMainThread() override {
       InProcessBrowserTest::SetUpOnMainThread();
 
@@ -248,3 +256,25 @@ IN_PROC_BROWSER_TEST_F(BraveContentBrowserClientTest,
   EXPECT_STREQ(entry->GetURL().spec().c_str(),
       torrent_extension_url().spec().c_str()) << "No changes on the real URL";
 }
+
+IN_PROC_BROWSER_TEST_F(BraveContentBrowserClientTest,
+    HangoutsEnabledByDefault) {
+  ASSERT_TRUE(browser()->profile()->GetPrefs()->GetBoolean(kHangoutsEnabled));
+  extensions::ExtensionRegistry* registry =
+    extensions::ExtensionRegistry::Get(browser()->profile());
+  ASSERT_TRUE(registry->enabled_extensions().Contains(hangouts_extension_id));
+}
+
+IN_PROC_BROWSER_TEST_F(BraveContentBrowserClientTest,
+    PRE_HangoutsDisabledDoesNotLoadComponent) {
+  browser()->profile()->GetPrefs()->SetBoolean(kHangoutsEnabled, false);
+}
+
+IN_PROC_BROWSER_TEST_F(BraveContentBrowserClientTest,
+    HangoutsDisabledDoesNotLoadComponent) {
+  ASSERT_FALSE(browser()->profile()->GetPrefs()->GetBoolean(kHangoutsEnabled));
+  extensions::ExtensionRegistry* registry =
+    extensions::ExtensionRegistry::Get(browser()->profile());
+  ASSERT_FALSE(registry->enabled_extensions().Contains(
+        hangouts_extension_id));
+}

browser/brave_profile_prefs.cc

@@ -40,6 +40,9 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   // WebTorrent
   registry->RegisterBooleanPref(kWebTorrentEnabled, true);
 
+  // Hangouts
+  registry->RegisterBooleanPref(kHangoutsEnabled, true);
+
   // No sign into Brave functionality
   registry->SetDefaultPrefValue(prefs::kSigninAllowed, base::Value(false));
 

browser/brave_profile_prefs_browsertest.cc

@@ -30,6 +30,8 @@ IN_PROC_BROWSER_TEST_F(BraveProfilePrefsBrowserTest, MiscBravePrefs) {
       browser()->profile()->GetPrefs()->GetBoolean(kNoScriptControlType));
   EXPECT_TRUE(
       browser()->profile()->GetPrefs()->GetBoolean(kWebTorrentEnabled));
+  EXPECT_TRUE(
+      browser()->profile()->GetPrefs()->GetBoolean(kHangoutsEnabled));
 }
 
 IN_PROC_BROWSER_TEST_F(BraveProfilePrefsBrowserTest, DisableGoogleServicesByDefault) {

browser/extensions/api/settings_private/brave_prefs_util.cc

@@ -43,6 +43,9 @@ const PrefsUtil::TypedPrefMap& BravePrefsUtil::GetWhitelistedKeys() {
   // WebTorrent pref
   (*s_brave_whitelist)[kWebTorrentEnabled] =
       settings_api::PrefType::PREF_TYPE_BOOLEAN;
+  // Hangouts pref
+  (*s_brave_whitelist)[kHangoutsEnabled] =
+      settings_api::PrefType::PREF_TYPE_BOOLEAN;
   return *s_brave_whitelist;
 }
 

browser/extensions/brave_component_loader.cc

@@ -73,6 +73,17 @@ void BraveComponentLoader::AddExtension(const std::string& extension_id,
         base::Unretained(this), extension_id, true));
 }
 
+void BraveComponentLoader::AddHangoutServicesExtension() {
+  if (!profile_prefs_->FindPreference(kHangoutsEnabled) ||
+      profile_prefs_->GetBoolean(kHangoutsEnabled)) {
+    ForceAddHangoutServicesExtension();
+  }
+}
+
+void BraveComponentLoader::ForceAddHangoutServicesExtension() {
+  ComponentLoader::AddHangoutServicesExtension();
+}
+
 void BraveComponentLoader::AddDefaultComponentExtensions(
     bool skip_session_components) {
   ComponentLoader::AddDefaultComponentExtensions(skip_session_components);

browser/extensions/brave_component_loader.h

@@ -34,10 +34,12 @@ class BraveComponentLoader : public ComponentLoader {
     const std::string& manifest);
   void AddExtension(const std::string& id,
       const std::string& name, const std::string& public_key);
+  void ForceAddHangoutServicesExtension();
 
   static bool IsPdfjsDisabled();
 
  private:
+  void AddHangoutServicesExtension() override;
   friend class ::BravePDFExtensionTest;
   void ObserveOpenPdfExternallySetting();
   // Callback for changes to the AlwaysOpenPdfExternally setting.

browser/resources/settings/brave_default_extensions_page/brave_default_extensions_browser_proxy.js

@@ -9,6 +9,7 @@ cr.define('settings', function() {
      * @param {boolean} value name.
      */
     setWebTorrentEnabled(value) {}
+    setHangoutsEnabled(value) {}
   }
 
   /**
@@ -19,6 +20,9 @@ cr.define('settings', function() {
     setWebTorrentEnabled(value) {
       chrome.send('setWebTorrentEnabled', [value]);
     }
+    setHangoutsEnabled(value) {
+      chrome.send('setHangoutsEnabled', [value]);
+    }
   }
 
   cr.addSingletonGetter(BraveDefaultExtensionsBrowserProxyImpl);

browser/resources/settings/brave_default_extensions_page/brave_default_extensions_page.html

@@ -18,6 +18,12 @@
         sub-label="$i18n{webTorrentEnabledDesc}"
         on-settings-boolean-control-change="onWebTorrentEnabledChange_">
     </settings-toggle-button>
+    <settings-toggle-button id="hangoutsEnabled"
+        pref="{{prefs.brave.hangouts_enabled}}"
+        label="Hangouts"
+        sub-label="$i18n{hangoutsEnabledDesc}"
+        on-settings-boolean-control-change="onHangoutsEnabledChange_">
+    </settings-toggle-button>
     <div class="settings-row continuation" id="manageExtensionsRow">
       <cr-link-row class="first" icon-class="icon-external"
         label="$i18n{manageExtensionsLabel}" on-click="openExtensionsPage_">

browser/resources/settings/brave_default_extensions_page/brave_default_extensions_page.js

@@ -23,13 +23,18 @@ Polymer({
   /** @override */
   ready: function() {
     this.onWebTorrentEnabledChange_ = this.onWebTorrentEnabledChange_.bind(this)
+    this.onHangoutsEnabledChange_ = this.onHangoutsEnabledChange_.bind(this)
     this.openExtensionsPage_ = this.openExtensionsPage_.bind(this)
   },
 
   onWebTorrentEnabledChange_: function() {
     this.browserProxy_.setWebTorrentEnabled(this.$.webTorrentEnabled.checked);
   },
 
+  onHangoutsEnabledChange_: function() {
+    this.browserProxy_.setHangoutsEnabled(this.$.hangoutsEnabled.checked);
+  },
+
   openExtensionsPage_: function() {
     window.open("chrome://extensions", "_self");
   },

browser/ui/webui/settings/brave_default_extensions_handler.cc

@@ -8,6 +8,7 @@
 
 #include "base/bind.h"
 #include "base/values.h"
+#include "brave/browser/extensions/brave_component_loader.h"
 #include "brave/common/extensions/extension_constants.h"
 #include "brave/components/brave_webtorrent/grit/brave_webtorrent_resources.h"
 #include "chrome/browser/extensions/component_loader.h"
@@ -22,6 +23,10 @@ void BraveDefaultExtensionsHandler::RegisterMessages() {
       "setWebTorrentEnabled",
       base::BindRepeating(&BraveDefaultExtensionsHandler::SetWebTorrentEnabled,
                           base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "setHangoutsEnabled",
+      base::BindRepeating(&BraveDefaultExtensionsHandler::SetHangoutsEnabled,
+                          base::Unretained(this)));
 }
 
 void BraveDefaultExtensionsHandler::SetWebTorrentEnabled(
@@ -48,3 +53,26 @@ void BraveDefaultExtensionsHandler::SetWebTorrentEnabled(
         extensions::disable_reason::DisableReason::DISABLE_BLOCKED_BY_POLICY);
   }
 }
+
+void BraveDefaultExtensionsHandler::SetHangoutsEnabled(
+    const base::ListValue* args) {
+  CHECK_EQ(args->GetSize(), 1U);
+  CHECK(profile_);
+  bool value;
+  args->GetBoolean(0, &value);
+
+  extensions::ExtensionService* service =
+    extensions::ExtensionSystem::Get(profile_)->extension_service();
+
+  if (value) {
+    extensions::ComponentLoader* loader = service->component_loader();
+    if (!loader->Exists(hangouts_extension_id)) {
+      static_cast<extensions::BraveComponentLoader*>(loader)->
+          ForceAddHangoutServicesExtension();
+    }
+    service->EnableExtension(hangouts_extension_id);
+  } else {
+    service->DisableExtension(hangouts_extension_id,
+        extensions::disable_reason::DisableReason::DISABLE_BLOCKED_BY_POLICY);
+  }
+}

browser/ui/webui/settings/brave_default_extensions_handler.h

@@ -21,6 +21,7 @@ class BraveDefaultExtensionsHandler : public settings::SettingsPageUIHandler {
   void OnJavascriptDisallowed() override {}
 
   void SetWebTorrentEnabled(const base::ListValue* args);
+  void SetHangoutsEnabled(const base::ListValue* args);
 
   Profile* profile_ = nullptr;
 

chromium_src/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

@@ -85,6 +85,8 @@ void BraveAddCommonStrings(content::WebUIDataSource* html_source,
       IDS_SETTINGS_BRAVE_DEFAULT_EXTENSIONS_TITLE},
     {"webTorrentEnabledDesc",
       IDS_SETTINGS_WEBTORRENT_ENABLED_DESC},
+    {"hangoutsEnabledDesc",
+      IDS_SETTINGS_HANGOUTS_ENABLED_DESC},
     {"manageExtensionsLabel",
       IDS_SETTINGS_MANAGE_EXTENSIONS_LABEL}
   };

common/extensions/extension_constants.cc

@@ -7,6 +7,7 @@
 const char brave_extension_id[] = "mnojpmjdmbbfmejpflffifhffcmidifd";
 const char brave_rewards_extension_id[] = "jidkidbbcafjabdphckchenhfomhnfma";
 const char brave_webtorrent_extension_id[] = "lgjmpdmojkpocjcopdikifhejkkjglho";
+const char hangouts_extension_id[] = "nkeimhogjdpnpccoofpliimaahmaaome";
 const char widevine_extension_id[] = "oimompecagnajdejgnnjijobebaeigek";
 const char brave_sync_extension_id[] = "nomlkjnggnifocmealianaaiobmebgil";
 

common/extensions/extension_constants.h

@@ -5,6 +5,7 @@
 extern const char brave_extension_id[];
 extern const char brave_rewards_extension_id[];
 extern const char brave_webtorrent_extension_id[];
+extern const char hangouts_extension_id[];
 extern const char widevine_extension_id[];
 extern const char brave_sync_extension_id[];
 

common/pref_names.cc

@@ -43,3 +43,4 @@ const char kRewardsAddFundsNotification[] = "brave.rewards.add_funds_notificatio
 const char kMigratedMuonProfile[] = "brave.muon.migrated_profile";
 const char kBravePaymentsPinnedItemCount[] = "brave.muon.import_pinned_item_count";
 const char kWebTorrentEnabled[] = "brave.webtorrent_enabled";
+const char kHangoutsEnabled[] = "brave.hangouts_enabled";

common/pref_names.h

@@ -40,5 +40,6 @@ extern const char kRewardsAddFundsNotification[];
 extern const char kMigratedMuonProfile[];
 extern const char kBravePaymentsPinnedItemCount[];
 extern const char kWebTorrentEnabled[];
+extern const char kHangoutsEnabled[];
 
 #endif  // BRAVE_COMMON_PREF_NAMES_H_

patches/chrome-browser-extensions-component_loader.h.patch

@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/extensions/component_loader.h b/chrome/browser/extensions/component_loader.h
-index 8a78a56e2425adf937754bd0b202549744597bd0..54badd2618b872ecdafff1457e0e955fdc057729 100644
+index 8a78a56e2425adf937754bd0b202549744597bd0..52a2735a5bf944e8f39e61ba8294d70ee3034a7f 100644
 --- a/chrome/browser/extensions/component_loader.h
 +++ b/chrome/browser/extensions/component_loader.h
 @@ -83,7 +83,7 @@ class ComponentLoader {
@@ -11,3 +11,19 @@ index 8a78a56e2425adf937754bd0b202549744597bd0..54badd2618b872ecdafff1457e0e955f
 
    // Similar to above but adds the default component extensions for kiosk mode.
    void AddDefaultComponentExtensionsForKioskMode(bool skip_session_components);
+@@ -118,6 +118,7 @@ class ComponentLoader {
+   }
+
+  private:
++  friend class BraveComponentLoader;
+   FRIEND_TEST_ALL_PREFIXES(ComponentLoaderTest, ParseManifest);
+
+   // Information about a registered component extension.
+@@ -166,6 +167,7 @@ class ComponentLoader {
+   void AddAudioPlayerExtension();
+   void AddGalleryExtension();
+   void AddZipArchiverExtension();
++  virtual
+   void AddHangoutServicesExtension();
+   void AddImageLoaderExtension();
+   void AddNetworkSpeechSynthesisExtension();

renderer/brave_content_settings_observer.cc

@@ -268,6 +268,8 @@ bool BraveContentSettingsObserver::AllowAutoplay(bool default_value) {
       "[*.]pandora.com",
       "[*.]periscope.tv",
       "[*.]pscp.tv",
+      "[*.]hangouts.google.com",
+      "[*.]meet.google.com",
   };
   for (const auto& pattern : kWhitelistPatterns) {
     if (ContentSettingsPattern::FromString(pattern).Matches(primary_url))