Propagate the correct device scale factor into the RemoteFrame.

BUG=522237, 493262

Review URL: https://codereview.chromium.org/1312903017

git-svn-id: svn://svn.chromium.org/blink/trunk@201936 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/web/WebRemoteFrameImpl.cpp

@@ -755,12 +755,9 @@ void WebRemoteFrameImpl::initializeFromFrame(WebLocalFrame* source) const
     ASSERT(source);
     WebLocalFrameImpl* localFrameImpl = toWebLocalFrameImpl(source);
 
-    // TODO(bokan): The scale_factor argument here used to be the now-removed
-    // FrameView::visibleContentScaleFactor but the callee uses this parameter
-    // to set the device scale factor. crbug.com/493262
     client()->initializeChildFrame(
         localFrameImpl->frame()->view()->frameRect(),
-        1);
+        localFrameImpl->frame()->page()->deviceScaleFactor());
 }
 
 void WebRemoteFrameImpl::setReplicatedOrigin(const WebSecurityOrigin& origin) const

third_party/WebKit/public/web/WebRemoteFrameClient.h

@@ -34,7 +34,7 @@ public:
     // out of process.
     virtual void initializeChildFrame(
         const WebRect& frameRect,
-        float scaleFactor) { }
+        float deviceScaleFactor) { }
 
     // A remote frame was asked to start a navigation.
     virtual void navigate(const WebURLRequest& request, bool shouldReplaceCurrentEntry) { }