Move GetDocument method from WebFrame to WebLocalFrame.

content/renderer/media/android/media_info_loader.h

Index: content/renderer/media/android/media_info_loader.h
diff --git a/content/renderer/media/android/media_info_loader.h b/content/renderer/media/android/media_info_loader.h
index e8a55ce45934ed05091fb6bf6a5b7c366ced4be6..624d3427a488cf473a1d5397c916b6a39d1e68e7 100644
--- a/content/renderer/media/android/media_info_loader.h
+++ b/content/renderer/media/android/media_info_loader.h
@@ -22,7 +22,7 @@
 
 namespace blink {
 class WebAssociatedURLLoader;
-class WebFrame;
+class WebLocalFrame;
 class WebURLRequest;
 }
 
@@ -66,7 +66,7 @@ class CONTENT_EXPORT MediaInfoLoader
   ~MediaInfoLoader() override;
 
   // Start loading media info.
-  void Start(blink::WebFrame* frame);
+  void Start(blink::WebLocalFrame* frame);
 
   // Returns true if the media resource has a single origin, false otherwise.
   // Only valid to call after the loader becomes ready.