Make PageScaleFactor work for oopif subframes.

content/browser/web_contents/web_contents_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 481 matching lines @@
       int32_t render_view_route_id,
       int32_t main_frame_route_id,
       int32_t main_frame_widget_route_id,
       const mojom::CreateNewWindowParams& params,
       SessionStorageNamespace* session_storage_namespace) override;
   void ShowCreatedWindow(int process_id,
                          int main_frame_widget_route_id,
                          WindowOpenDisposition disposition,
                          const gfx::Rect& initial_rect,
                          bool user_gesture) override;
+  void SetPageScaleFactorForSubframes(double page_scale_factor) override;
 
   // RenderViewHostDelegate ----------------------------------------------------
   RenderViewHostDelegateView* GetDelegateView() override;
   bool OnMessageReceived(RenderViewHostImpl* render_view_host,
                          const IPC::Message& message) override;
   // RenderFrameHostDelegate has the same method, so list it there because this
   // interface is going away.
   // WebContents* GetAsWebContents() override;
   void RenderViewCreated(RenderViewHost* render_view_host) override;
   void RenderViewReady(RenderViewHost* render_view_host) override;
@@ skipping 1002 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_