Hook up WebRTC logging extension API to the underlying functionality.

content/public/browser/render_process_host.h

Index: content/public/browser/render_process_host.h
diff --git a/content/public/browser/render_process_host.h b/content/public/browser/render_process_host.h
index 4d301c02c3cce1863d17da4cde2f88079fd96849..3aedc59ed4b8dc722dfb483e70cc3d722e03688c 100644
--- a/content/public/browser/render_process_host.h
+++ b/content/public/browser/render_process_host.h
@@ -9,6 +9,7 @@
 #include "base/id_map.h"
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
+#include "base/supports_user_data.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_sender.h"
@@ -35,7 +36,8 @@ typedef base::Thread* (*RendererMainThreadFactoryFunction)(
 // communication channel. There will generally be one RenderProcessHost per
 // renderer process.
 class CONTENT_EXPORT RenderProcessHost : public IPC::Sender,
-                                         public IPC::Listener {
+                                         public IPC::Listener,
+                                         public base::SupportsUserData {
  public:
   typedef IDMap<RenderProcessHost>::iterator iterator;