Attach a WebLayer to a frame element for out-of-process iframes.

Source/web/WebFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 170 matching lines @@
 #include "platform/network/ResourceRequest.h"
 #include "platform/scroll/ScrollbarTheme.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SchemeRegistry.h"
 #include "platform/weborigin/SecurityPolicy.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebFileSystem.h"
 #include "public/platform/WebFloatPoint.h"
 #include "public/platform/WebFloatRect.h"
+#include "public/platform/WebLayer.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebRect.h"
 #include "public/platform/WebSize.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebVector.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/HashMap.h"
 
 using namespace WebCore;
 
@@ skipping 347 matching lines @@
 
 WebVector<WebIconURL> WebFrameImpl::iconURLs(int iconTypesMask) const
 {
     // The URL to the icon may be in the header. As such, only
     // ask the loader for the icon if it's finished loading.
     if (frame()->loader().state() == FrameStateComplete)
         return frame()->document()->iconURLs(iconTypesMask);
     return WebVector<WebIconURL>();
 }
 
+void WebFrameImpl::setRemoteWebLayer(WebLayer* webLayer)
+{
+    if (!frame())
+        return;
+
+    if (frame()->remotePlatformLayer())
+        GraphicsLayer::unregisterContentsLayer(frame()->remotePlatformLayer());
+    if (webLayer)
+        GraphicsLayer::registerContentsLayer(webLayer);
+    frame()->setRemotePlatformLayer(webLayer);
+    frame()->ownerElement()->setNeedsStyleRecalc(WebCore::SubtreeStyleChange, WebCore::StyleChangeFromRenderer);

[eseidel, 2013/12/11 23:19:46]

Presumably you want the layer tree to be re-created?  Are you sure you want a
full sub-tree recalc?

+}
+
 WebSize WebFrameImpl::scrollOffset() const
 {
     FrameView* view = frameView();
     if (!view)
         return WebSize();
     return view->scrollOffset();
 }
 
 WebSize WebFrameImpl::minimumScrollOffset() const
 {
@@ skipping 1936 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace blink