Move [Provisional]DataSource accessors/methods from WebFrame to WebLocalFrame.

third_party/WebKit/public/web/WebFrame.h

Index: third_party/WebKit/public/web/WebFrame.h
diff --git a/third_party/WebKit/public/web/WebFrame.h b/third_party/WebKit/public/web/WebFrame.h
index 42c4b086d50d14c01a99e49835117ce1aa35e4cc..92a6c4f532292395cb63017753f80e5562adc7c9 100644
--- a/third_party/WebKit/public/web/WebFrame.h
+++ b/third_party/WebKit/public/web/WebFrame.h
@@ -57,7 +57,6 @@ class Visitor;
 class WebAssociatedURLLoader;
 struct WebAssociatedURLLoaderOptions;
 class WebDOMEvent;
-class WebDataSource;
 class WebDocument;
 class WebElement;
 class WebLocalFrame;
@@ -307,12 +306,6 @@ class WebFrame {
   // Stops any pending loads on the frame and its children.
   virtual void StopLoading() = 0;
 
-  // Returns the data source that is currently loading.  May be null.
-  virtual WebDataSource* ProvisionalDataSource() const = 0;
-
-  // Returns the data source that is currently loaded.
-  virtual WebDataSource* DataSource() const = 0;
-
   // View-source rendering mode.  Set this before loading an URL to cause
   // it to be rendered in view-source mode.
   virtual void EnableViewSourceMode(bool) = 0;