Plumbing blink::Interface{Provider|Registry} through WebLocalFrame's constructor.

third_party/WebKit/public/web/WebFrameClient.h

Index: third_party/WebKit/public/web/WebFrameClient.h
diff --git a/third_party/WebKit/public/web/WebFrameClient.h b/third_party/WebKit/public/web/WebFrameClient.h
index 5349ba331c836cddd1a09b70129364457bbc21c4..ef4f788c5720774e67f65571febdfc9a3d144490 100644
--- a/third_party/WebKit/public/web/WebFrameClient.h
+++ b/third_party/WebKit/public/web/WebFrameClient.h
@@ -68,8 +68,6 @@
 namespace blink {
 
 enum class WebTreeScopeType;
-class InterfaceProvider;
-class InterfaceRegistry;
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
 class WebColorChooser;
@@ -744,10 +742,6 @@ class BLINK_EXPORT WebFrameClient {
     }
   }
 
-  // Mojo ----------------------------------------------------------------
-  virtual InterfaceProvider* interfaceProvider() { return nullptr; }
-  virtual InterfaceRegistry* interfaceRegistry() { return nullptr; }
-
   // Visibility ----------------------------------------------------------
 
   // Returns the current visibility of the WebFrame.