Add blink::ServiceRegistry and expose it from LocalFrame and Platform.

third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp

 /*
  * Copyright (c) 2015, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 91 matching lines @@
         if (childFrame) {
             childDocumentLoader->detachFromFrame();
             childDocumentLoader.clear();
             childFrame->detach(FrameDetachType::Remove);
         }
     }
 
     FrameFetchContext* createChildFrame()
     {
         childClient = StubFrameLoaderClientWithParent::create(document->frame());
-        childFrame = LocalFrame::create(childClient.get(), document->frame()->host(), owner.get());
+        childFrame = LocalFrame::create(childClient.get(), document->frame()->host(), owner.get(), nullptr);
         childFrame->setView(FrameView::create(childFrame.get(), IntSize(500, 500)));
         childFrame->init();
         childDocumentLoader = DocumentLoader::create(childFrame.get(), ResourceRequest("http://www.example.com"), SubstituteData());
         childDocument = childFrame->document();
         FrameFetchContext* childFetchContext = static_cast<FrameFetchContext*>(&childDocumentLoader->fetcher()->context());
         FrameFetchContext::provideDocumentToContext(*childFetchContext, childDocument.get());
         return childFetchContext;
     }
 
     OwnPtr<DummyPageHolder> dummyPageHolder;
@@ skipping 586 matching lines @@
         fetchContext->addAdditionalRequestHeaders(mainRequest, FetchMainResource);
         EXPECT_EQ(mainRequest.isExternalRequest(), test.isExternalExpectation);
 
         ResourceRequest subRequest(test.url);
         fetchContext->addAdditionalRequestHeaders(subRequest, FetchSubresource);
         EXPECT_EQ(subRequest.isExternalRequest(), test.isExternalExpectation);
     }
 }
 
 } // namespace blink