Revert of Make RenderProcessHost/RenderThread use MojoChildConnection/MojoShellConnection

content/public/child/child_thread.h

Index: content/public/child/child_thread.h
diff --git a/content/public/child/child_thread.h b/content/public/child/child_thread.h
index d3ad0cec617130654c6c7f181c167120c866f8ec..06bb8122a1101f536e1f29afa2f99bc0a8b4337b 100644
--- a/content/public/child/child_thread.h
+++ b/content/public/child/child_thread.h
@@ -26,8 +26,6 @@
 }
 
 namespace content {
-
-  class MojoShellConnection;
 
 // An abstract base class that contains logic shared between most child
 // processes of the embedder.
@@ -67,10 +65,6 @@
   // actions in chrome/tools/extract_actions.py.
   virtual void RecordComputedAction(const std::string& action) = 0;
 
-  // Returns the MojoShellConnection for the thread (from which a
-  // shell::Connector can be obtained).
-  virtual MojoShellConnection* GetMojoShellConnection() = 0;
-
   // Returns the InterfaceRegistry that this process uses to expose interfaces
   // to the browser.
   virtual shell::InterfaceRegistry* GetInterfaceRegistry() = 0;