Oilpan: fix build after r191942.

Source/web/InspectorRenderingAgent.cpp

 // Copyright 2015 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 "config.h"
 #include "web/InspectorRenderingAgent.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
+#include "core/inspector/InspectorOverlay.h"
 #include "core/inspector/InspectorState.h"
 #include "core/page/Page.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 
 namespace blink {
 
 namespace RenderingAgentState {
 static const char continuousPaintingEnabled[] = "continuousPaintingEnabled";
 static const char showDebugBorders[] = "showDebugBorders";
@@ skipping 85 matching lines @@
     return true;
 }
 
 DEFINE_TRACE(InspectorRenderingAgent)
 {
     visitor->trace(m_overlay);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink