Include debug name in GraphicsLayerDebugInfo.

Source/platform/graphics/GraphicsLayerDebugInfo.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 19 matching lines @@
 {
 }
 
 GraphicsLayerDebugInfo::~GraphicsLayerDebugInfo() { }
 
 void GraphicsLayerDebugInfo::appendAsTraceFormat(blink::WebString* out) const
 {
     RefPtr<JSONObject> jsonObject = JSONObject::create();
     appendLayoutRects(jsonObject.get());
     appendCompositingReasons(jsonObject.get());
+    appendDebugName(jsonObject.get());
     *out = jsonObject->toJSONString();
 }
 
 GraphicsLayerDebugInfo* GraphicsLayerDebugInfo::clone() const
 {
     GraphicsLayerDebugInfo* toReturn = new GraphicsLayerDebugInfo();
     for (size_t i = 0; i < m_currentLayoutRects.size(); ++i)
         toReturn->currentLayoutRects().append(m_currentLayoutRects[i]);
     toReturn->setCompositingReasons(m_compositingReasons);
     return toReturn;
@@ skipping 123 matching lines @@
 
     if (m_compositingReasons & CompositingReasonOutOfFlowClipping)
         jsonArray->pushString("Has clipping ancestor");
 
     if (m_compositingReasons & CompositingReasonIsolateCompositedDescendants)
         jsonArray->pushString("Should isolate composited descendants");
 
     jsonObject->setArray("compositing_reasons", jsonArray);
 }
 
+void GraphicsLayerDebugInfo::appendDebugName(JSONObject* jsonObject) const
+{
+    if (m_debugName.isEmpty())
+        return;
+
+    jsonObject->setString("layer_name", m_debugName);
+}
+
 } // namespace WebCore