Allow renderer to create pepper ResourceHosts in the browser

content/public/renderer/renderer_ppapi_host.h

Index: content/public/renderer/renderer_ppapi_host.h
diff --git a/content/public/renderer/renderer_ppapi_host.h b/content/public/renderer/renderer_ppapi_host.h
index 4d81c50b7e80168bed5f16e0ca86e8517abeeda0..03ae07a4f749b993290354985353189f972c8463 100644
--- a/content/public/renderer/renderer_ppapi_host.h
+++ b/content/public/renderer/renderer_ppapi_host.h
@@ -23,6 +23,7 @@ class Point;
 
 namespace IPC {
 struct ChannelHandle;
+class Message;
 }
 
 namespace ppapi {
@@ -136,6 +137,18 @@ class RendererPpapiHost {
   // Returns true if the plugin is running in process.
   virtual bool IsRunningInProcess() const = 0;
 
+  // There are times when the renderer needs to create a ResourceHost in the
+  // browser. This function does so asynchronously. |nested_msg| is the
+  // resource host creation message and |instance| is the PP_Instance which
+  // the resource will belong to. |callback| will be called with the pending
+  // host ID when the ResourceHost has been created. This can be passed back
+  // to the plugin to attach to the ResourceHost. A pending ID of 0 will be
+  // passed to the callback upon error.
+  virtual void CreateBrowserResourceHost(

[yzshen1, 2013/05/29 17:57:21]

[I need to double check the code.]
If the resource host at the browser side is created and the renderer dies before
it receive the response, will it leak the resource host?

[raymes, 2013/06/04 04:11:11]

This doesn't happen right now. I will fix it in a separate CL.

+      PP_Instance instance,
+      const IPC::Message& nested_msg,
+      base::Callback<void(int)> callback) const = 0;

[yzshen1, 2013/05/29 17:57:21]

const &?

[raymes, 2013/06/04 04:11:11]

Done.

+
  protected:
   virtual ~RendererPpapiHost() {}
 };