attachment broker wip

content/renderer/render_thread_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 110 matching lines @@
 // The RenderThreadImpl class represents a background thread where RenderView
 // instances live.  The RenderThread supports an API that is used by its
 // consumer to talk indirectly to the RenderViews and supporting objects.
 // Likewise, it provides an API for the RenderViews to talk back to the main
 // process (i.e., their corresponding WebContentsImpl).
 //
 // Most of the communication occurs in the form of IPC messages.  They are
 // routed to the RenderThread according to the routing IDs of the messages.
 // The routing IDs correspond to RenderView instances.
 class CONTENT_EXPORT RenderThreadImpl
-    : public RenderThread,
-      public ChildThreadImpl,
+    : virtual public RenderThread,
+      virtual public ChildThreadImpl,
       public GpuChannelHostFactory,
       NON_EXPORTED_BASE(public CompositorDependencies) {
  public:
   static RenderThreadImpl* current();
 
   explicit RenderThreadImpl(const InProcessChildThreadParams& params);
   explicit RenderThreadImpl(scoped_ptr<base::MessageLoop> main_message_loop);
   ~RenderThreadImpl() override;
   void Shutdown() override;
 
@@ skipping 502 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_