Move ContentsSize and HasVisibleContent methods from WebFrame to WebLocalFrame.

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 75354f0cc7ce647a48b8d002e36cf0e61c0d8743..6fc70b316d77a3a0b4a1a43502dcf90a8dca5c5d 100644
--- a/third_party/WebKit/public/web/WebLocalFrame.h
+++ b/third_party/WebKit/public/web/WebLocalFrame.h
@@ -14,6 +14,7 @@
 #include "WebHistoryItem.h"
 #include "public/platform/WebCachePolicy.h"
 #include "public/platform/WebFocusType.h"
+#include "public/platform/WebSize.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/platform/site_engagement.mojom-shared.h"
@@ -707,6 +708,9 @@ class WebLocalFrame : public WebFrame {
 
   // Geometry -----------------------------------------------------------------
 
+  // NOTE: These routines do not force page layout so their results may
+  // not be accurate if the page layout is out-of-date.
+
   // The scroll offset from the top-left corner of the frame in pixels.
   virtual WebSize GetScrollOffset() const = 0;
   virtual void SetScrollOffset(const WebSize&) = 0;
@@ -714,6 +718,12 @@ class WebLocalFrame : public WebFrame {
   // If set to false, do not draw scrollbars on this frame's view.
   virtual void SetCanHaveScrollbars(bool) = 0;
 
+  // The size of the contents area.
+  virtual WebSize ContentsSize() const = 0;
+
+  // Returns true if the contents (minus scrollbars) has non-zero area.
+  virtual bool HasVisibleContent() const = 0;
+
   // Printing ------------------------------------------------------------
 
   // Reformats the WebFrame for printing. WebPrintParams specifies the printable