Revert of Make RenderProcessHost/RenderThread use MojoChildConnection/MojoShellConnection

content/public/child/child_thread.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_
 #define CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_
 
 #include <string>
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_sender.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 namespace base {
 struct UserMetricsAction;
 }
 
 namespace shell {
 class InterfaceProvider;
 class InterfaceRegistry;
 }
 
 namespace content {
 
-  class MojoShellConnection;
-
 // An abstract base class that contains logic shared between most child
 // processes of the embedder.
 class CONTENT_EXPORT ChildThread : public IPC::Sender {
  public:
   // Returns the one child thread for this process.  Note that this can only be
   // accessed when running on the child thread itself.
   static ChildThread* Get();
 
   ~ChildThread() override {}
 
@@ skipping 18 matching lines @@
   //   RenderThread::Get()->RecordAction(
   //       base::UserMetricsAction("my extremely long action name"));
   // because otherwise our processing scripts won't pick up on new actions.
   virtual void RecordAction(const base::UserMetricsAction& action) = 0;
 
   // Sends over a string to be recorded by user metrics as a computed action.
   // When you use this you need to also update the rules for extracting known
   // 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;
 
   // Returns the InterfaceProvider that this process can use to bind
   // interfaces exposed to it by the browser.
   virtual shell::InterfaceProvider* GetRemoteInterfaces() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_