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

third_party/WebKit/public/web/WebLocalFrame.h

Index: third_party/WebKit/public/web/WebLocalFrame.h
diff --git a/third_party/WebKit/public/web/WebLocalFrame.h b/third_party/WebKit/public/web/WebLocalFrame.h
index 2d0eeb2537b49bddb0045f679802a91c31a45fa1..744522935944f65718cfdf1f4a5be94f77040872 100644
--- a/third_party/WebKit/public/web/WebLocalFrame.h
+++ b/third_party/WebKit/public/web/WebLocalFrame.h
@@ -13,6 +13,7 @@ namespace blink {
 enum class WebAppBannerPromptReply;
 enum class WebSandboxFlags;
 enum class WebTreeScopeType;
+class ServiceRegistry;
 class WebAutofillClient;
 class WebContentSettingsClient;
 class WebDevToolsAgent;
@@ -31,14 +32,14 @@ class WebLocalFrame : public WebFrame {
 public:
     // Creates a WebFrame. Delete this WebFrame by calling WebFrame::close().
     // It is valid to pass a null client pointer.
-    BLINK_EXPORT static WebLocalFrame* create(WebTreeScopeType, WebFrameClient*, WebFrame* opener = nullptr);
+    BLINK_EXPORT static WebLocalFrame* create(WebTreeScopeType, WebFrameClient*, WebFrame* opener = nullptr, ServiceRegistry* = nullptr);

[dcheng, 2016/03/29 04:51:56]

Hmm. Would it make more sense to have a WebFrameClient::serviceRegistry() method
instead? Then you don't need to plumb this pointer everywhere in
WebLocalFrameImpl and WebRemoteFrameImpl.

[esprehn, 2016/03/29 05:26:20]

In general I want WebFrameClient to die, it's a god class that knows about
everything everywhere. Instead we should plumb the right dependencies to the
right layers. That said, this might make more sense there for now.

[Sam McNally, 2016/03/30 00:20:53]

Done.

 
     // Used to create a provisional local frame in prepration for replacing a
     // remote frame if the load commits. The returned frame is only partially
     // attached to the frame tree: it has the same parent as its potential
     // replacee but is invisible to the rest of the frames in the frame tree.
     // If the load commits, call swap() to fully attach this frame.
-    BLINK_EXPORT static WebLocalFrame* createProvisional(WebFrameClient*, WebRemoteFrame*, WebSandboxFlags, const WebFrameOwnerProperties&);
+    BLINK_EXPORT static WebLocalFrame* createProvisional(WebFrameClient*, WebRemoteFrame*, WebSandboxFlags, const WebFrameOwnerProperties&, ServiceRegistry* = nullptr);
 
     // Returns the WebFrame associated with the current V8 context. This
     // function can return 0 if the context is associated with a Document that