Add support for Pocket in component updater

We need to refactor this so it is not a manual add into electron eventually but just continuing this way for now until we refactor it

Auditors: @bridiver

brave/browser/api/brave_api_component_updater.cc

@@ -122,6 +122,9 @@ void ComponentUpdater::RegisterComponent(const std::string& component_id) {
   } else if (component_id == kPDFJSId) {
     RegisterComponentForUpdate(
         kPDFJSPublicKeyStr, registered_callback, ready_callback);
+  } else if (component_id == kPocketId) {
+    RegisterComponentForUpdate(
+        kPocketPublicKeyStr, registered_callback, ready_callback);
   } else if (component_id == kWidevineId) {
     brave::RegisterWidevineCdmComponent(
         g_browser_process->google_component_updater(),

brave/browser/component_updater/default_extensions.h

@@ -199,4 +199,33 @@ const std::string kWidevinePublicKeyStr(
     (const char *)kWidevinePublicKey, sizeof(kWidevinePublicKey));
 const std::string kWidevineId("oimompecagnajdejgnnjijobebaeigek");
 
+// Pocket
+// Download: https://clients2.google.com/service/update2/crx?response=redirect&prodversion=52.0.2743.116&x=id%3Dniloccemoadcdkdjlinkgdfekeahmflj%26uc // NOLINT
+const uint8_t kPocketPublicKey[162] = {
+  0x30, 0x81, 0x9f, 0x30, 0x0d, 0x06, 0x09, 0x2a,
+  0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01,
+  0x05, 0x00, 0x03, 0x81, 0x8d, 0x00, 0x30, 0x81,
+  0x89, 0x02, 0x81, 0x81, 0x00, 0xca, 0x09, 0x0c,
+  0x01, 0x8a, 0xc2, 0xb5, 0x51, 0xcc, 0x58, 0x32,
+  0x7e, 0x8c, 0x01, 0xf0, 0xdb, 0x73, 0xcc, 0x97,
+  0x5b, 0x3b, 0xdb, 0x9c, 0x2c, 0xea, 0x27, 0x08,
+  0xf0, 0x6d, 0xe3, 0x1a, 0x00, 0x78, 0xe2, 0xf7,
+  0x58, 0xdd, 0x0b, 0x2d, 0xdb, 0x13, 0x33, 0x29,
+  0xad, 0x36, 0x71, 0x5b, 0xfd, 0x40, 0x9d, 0xf9,
+  0x3d, 0x07, 0x83, 0xfe, 0x85, 0xca, 0x13, 0xc2,
+  0xa5, 0x1a, 0x31, 0x40, 0x78, 0x59, 0xe9, 0x90,
+  0x31, 0x12, 0x91, 0xb2, 0xbf, 0x6f, 0x0b, 0x8e,
+  0x55, 0xd6, 0x2b, 0xfd, 0xd7, 0x69, 0xea, 0xc8,
+  0x69, 0x28, 0x19, 0x3f, 0x9c, 0x44, 0xa6, 0x5c,
+  0xfa, 0x78, 0x81, 0xae, 0x20, 0x27, 0x9f, 0x82,
+  0x76, 0x18, 0x10, 0x02, 0x1c, 0x9a, 0xa4, 0x90,
+  0x28, 0x92, 0x0a, 0x1a, 0x61, 0x0c, 0x5b, 0x7f,
+  0x50, 0xda, 0x10, 0x10, 0xac, 0xf8, 0x56, 0x8a,
+  0x96, 0x64, 0x35, 0x63, 0xfd, 0x02, 0x03, 0x01,
+  0x00, 0x01
+};
+const std::string kPocketPublicKeyStr(
+    (const char *)kPocketPublicKey, sizeof(kPocketPublicKey));
+const std::string kPocketId("niloccemoadcdkdjlinkgdfekeahmflj");
+
 #endif  // BRAVE_BROWSER_COMPONENT_UPDATER_DEFAULT_EXTENSIONS_H_