Add a blink InterfaceRegistry.

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
@@ skipping 451 matching lines @@
     "clipboard/ClipboardUtilities.h",
     "clipboard/ClipboardUtilitiesPosix.cpp",
     "clipboard/ClipboardUtilitiesWin.cpp",
     "cpu/mips/CommonMacrosMSA.h",
     "credentialmanager/PlatformCredential.cpp",
     "credentialmanager/PlatformCredential.h",
     "credentialmanager/PlatformFederatedCredential.cpp",
     "credentialmanager/PlatformFederatedCredential.h",
     "credentialmanager/PlatformPasswordCredential.cpp",
     "credentialmanager/PlatformPasswordCredential.h",
+    "exported/InterfaceRegistry.cpp",
     "exported/Platform.cpp",
     "exported/ServiceRegistry.cpp",
     "exported/WebActiveGestureAnimation.cpp",
     "exported/WebActiveGestureAnimation.h",
     "exported/WebAudioBus.cpp",
     "exported/WebAudioDevice.cpp",
     "exported/WebBlobData.cpp",
     "exported/WebCanvasCaptureHandler.cpp",
     "exported/WebContentDecryptionModule.cpp",
     "exported/WebContentDecryptionModuleAccess.cpp",
@@ skipping 1480 matching lines @@
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//cc/surfaces:surface_id",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }