Make PageScaleFactor work for oopif subframes.

content/browser/web_contents/web_contents_impl.cc

 // 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.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 997 matching lines @@
   DCHECK(result.second);
   return base::Bind(&WebContentsImpl::RemoveBindingSet,
                     weak_factory_.GetWeakPtr(), interface_name);
 }
 
 void WebContentsImpl::UpdateDeviceScaleFactor(double device_scale_factor) {
   SendPageMessage(
       new PageMsg_SetDeviceScaleFactor(MSG_ROUTING_NONE, device_scale_factor));
 }
 
+void WebContentsImpl::SetPageScaleFactorForSubframes(double page_scale_factor) {
+  RenderWidgetHostView* main_frame_view = GetMainFrame()->GetView();
+  for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
+    if (view && view != main_frame_view) {
+      RenderWidgetHost* host = view->GetRenderWidgetHost();
+      host->Send(new FrameMsg_SetPageScaleFactor(host->GetRoutingID(),
+                                                 page_scale_factor));
+    }
+  }
+}
+
 void WebContentsImpl::GetScreenInfo(ScreenInfo* screen_info) {
   if (GetView())
     GetView()->GetScreenInfo(screen_info);
 }
 
 std::unique_ptr<WebUI> WebContentsImpl::CreateSubframeWebUI(
     const GURL& url,
     const std::string& frame_name) {
   DCHECK(!frame_name.empty());
   return CreateWebUI(url, frame_name);
@@ skipping 4391 matching lines @@
   GetMainFrame()->AddMessageToConsole(
       content::CONSOLE_MESSAGE_LEVEL_WARNING,
       base::StringPrintf("This site does not have a valid SSL "
                          "certificate! Without SSL, your site's and "
                          "visitors' data is vulnerable to theft and "
                          "tampering. Get a valid SSL certificate before"
                          " releasing your website to the public."));
 }
 
 }  // namespace content