Use the correct scale factor when rendering RemoteFrames with UseZoomForDSF.

third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp

 // Copyright 2014 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 "web/WebRemoteFrameImpl.h"
 
 #include "core/dom/Fullscreen.h"
 #include "core/dom/RemoteSecurityContext.h"
 #include "core/dom/SecurityContext.h"
 #include "core/frame/FrameView.h"
@@ skipping 411 matching lines @@
     m_frame = frame;
 }
 
 WebRemoteFrameImpl* WebRemoteFrameImpl::fromFrame(RemoteFrame& frame)
 {
     if (!frame.client())
         return nullptr;
     return static_cast<RemoteFrameClientImpl*>(frame.client())->webFrame();
 }
 
 void WebRemoteFrameImpl::initializeFromFrame(WebLocalFrame* source) const

[dcheng, 2016/08/17 17:11:31]

Do we still need to pass |source| here if it's unused?

 {
     DCHECK(source);
-    WebLocalFrameImpl* localFrameImpl = toWebLocalFrameImpl(source);
-    client()->initializeChildFrame(localFrameImpl->frame()->page()->deviceScaleFactor());
+    client()->initializeChildFrame();
 }
 
 void WebRemoteFrameImpl::setReplicatedOrigin(const WebSecurityOrigin& origin) const
 {
     DCHECK(frame());
     frame()->securityContext()->setReplicatedOrigin(origin);
 
     // If the origin of a remote frame changed, the accessibility object for the owner
     // element now points to a different child.
     //
@@ skipping 102 matching lines @@
 
 WebRemoteFrameImpl::WebRemoteFrameImpl(WebTreeScopeType scope, WebRemoteFrameClient* client)
     : WebRemoteFrame(scope)
     , m_frameClient(RemoteFrameClientImpl::create(this))
     , m_client(client)
     , m_selfKeepAlive(this)
 {
 }
 
 } // namespace blink