Adds the ability for the renderer to create the mojo channel

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 8ae38b4d37569d17b4a91794989ecd5b14620919..d598dc87def04aeb9a52ef6324c7a1c935d13c58 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -146,6 +146,11 @@
 #include "content/renderer/npapi/plugin_channel_host.h"
 #endif
 
+// TODO(sky): remove ifdef, temporary until mac sorted out.
+#if !defined(OS_MACOSX)
+#include "content/renderer/mojo_message_filter.h"
+#endif
+
 using base::ThreadRestrictions;
 using blink::WebDocument;
 using blink::WebFrame;
@@ -393,6 +398,12 @@ void RenderThreadImpl::Init() {
 
   AddFilter((new EmbeddedWorkerContextMessageFilter())->GetFilter());
 
+// TODO(sky): remove ifdef, temporary until mac sorted out.
+#if !defined(OS_MACOSX)
+  // MojoMessageFilter deletes itself as necessary.
+  new MojoMessageFilter(this);

[darin (slow to review), 2014/03/14 22:03:36]

Don't you need to call AddFilter? Oh, wait... I see. This class is not an
IPC::ChannelProxy::MessageFilter subclass. You should probably give this class a
different name, as *MessageFilter is usually reserved for things that are
subclasses of that interface.

Maybe call it MojoRenderProcessObserver?

[sky, 2014/03/14 22:45:12]

Done.

+#endif
+
   GetContentClient()->renderer()->RenderThreadStarted();
 
   InitSkiaEventTracer();