Move ClosePage() from RenderViewHost to WebContents.

content/browser/renderer_host/render_view_host_impl.h

Index: content/browser/renderer_host/render_view_host_impl.h
diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
index 2b031ff77c3a8f64bd8a3b2a47118199164792ac..c440ba14335d59a62347d1196a65354267a8d51c 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -123,7 +123,6 @@ class CONTENT_EXPORT RenderViewHostImpl
   void AllowBindings(int binding_flags) override;
   void ClearFocusedElement() override;
   bool IsFocusedElementEditable() override;
-  void ClosePage() override;
   void CopyImageAt(int x, int y) override;
   void SaveImageAt(int x, int y) override;
   void DirectoryEnumerationFinished(
@@ -227,6 +226,10 @@ class CONTENT_EXPORT RenderViewHostImpl
   // longer on the stack when we attempt to swap it out.
   void SuppressDialogsUntilSwapOut();
 
+  // Tells the renderer process to run the page's unload handler. An ack is sent

[Charlie Reis, 2015/04/29 17:31:18]

An ack -> A ClosePage_ACK

[nasko, 2015/04/29 21:15:33]

Done.

+  // back when the handler execution completes.
+  void ClosePage();
+
   // Close the page ignoring whether it has unload events registers.
   // This is called after the beforeunload and unload events have fired
   // and the user has agreed to continue with closing the page.