[Master/Overview CL] Make PageScaleFactor work for oopif subframe.

content/browser/renderer_host/render_widget_host_view_base.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/renderer_host/render_widget_host_view_base.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
@@ skipping 278 matching lines @@
   return true;
 }
 
 void RenderWidgetHostViewBase::DidUnregisterFromTextInputManager(
     TextInputManager* text_input_manager) {
   DCHECK(text_input_manager && text_input_manager_ == text_input_manager);
 
   text_input_manager_ = nullptr;
 }
 
+void RenderWidgetHostViewBase::UpdatePageScaleFactor(float page_scale) {
+  RenderWidgetHostImpl* host =
+      RenderWidgetHostImpl::From(GetRenderWidgetHost());
+
+  if (host && host->delegate())
+    host->delegate()->UpdatePageScaleFactor(page_scale);
+}
+
 base::WeakPtr<RenderWidgetHostViewBase> RenderWidgetHostViewBase::GetWeakPtr() {
   return weak_factory_.GetWeakPtr();
 }
 
 std::unique_ptr<SyntheticGestureTarget>
 RenderWidgetHostViewBase::CreateSyntheticGestureTarget() {
   RenderWidgetHostImpl* host =
       RenderWidgetHostImpl::From(GetRenderWidgetHost());
   return std::unique_ptr<SyntheticGestureTarget>(
       new SyntheticGestureTargetBase(host));
@@ skipping 211 matching lines @@
 
 bool RenderWidgetHostViewBase::IsChildFrameForTesting() const {
   return false;
 }
 
 cc::SurfaceId RenderWidgetHostViewBase::SurfaceIdForTesting() const {
   return cc::SurfaceId();
 }
 
 }  // namespace content