Adds plumbing to pass WebUI mojo::Handle from browser to renderer

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 1fc85d202c7c796d0ba648c551d76f0abeb30b6b..2afd97d8f5129d699ac0dfdbce38b82e6c8f9e4d 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -23,6 +23,11 @@
 #include "ipc/ipc_platform_file.h"
 #include "ui/surface/transport_dib.h"
 
+#if defined(USE_MOJO)
+#include "content/common/mojo/render_process.mojom.h"
+#include "mojo/public/bindings/remote_ptr.h"
+#endif
+
 struct ViewHostMsg_CompositorSurfaceBuffersSwapped_Params;
 
 namespace base {
@@ -51,7 +56,7 @@ class StoragePartition;
 class StoragePartitionImpl;
 
 #if defined(USE_MOJO)
-class MojoChannelInit;
+class RenderProcessHostMojoImpl;
 #endif
 
 // Implements a concrete RenderProcessHost for the browser process for talking
@@ -237,6 +242,10 @@ class CONTENT_EXPORT RenderProcessHostImpl
   void IncrementWorkerRefCount();
   void DecrementWorkerRefCount();
 
+#if defined(USE_MOJO)
+  void SetWebUIHandle(int32 view_routing_id, mojo::ScopedHandle handle);

[darin (slow to review), 2014/03/21 00:04:52]

nit: should this use ScopedMessagePipeHandle instead?

[sky, 2014/03/21 03:19:16]

Done.

+#endif
+
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread (see
   // browser_process.h)
@@ -300,11 +309,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   void SendDisableAecDumpToRenderer();
 #endif
 
-#if defined(USE_MOJO)
-  // Establishes the mojo channel to the renderer.
-  void CreateMojoChannel();
-#endif
-
   // The registered IPC listener objects. When this list is empty, we should
   // delete ourselves.
   IDMap<IPC::Listener> listeners_;
@@ -432,7 +436,7 @@ class CONTENT_EXPORT RenderProcessHostImpl
   int worker_ref_count_;
 
 #if defined(USE_MOJO)
-  scoped_ptr<MojoChannelInit> mojo_channel_init_;
+  scoped_ptr<RenderProcessHostMojoImpl> render_process_host_mojo_;
 #endif
 
   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;