content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

ppapi/proxy/ppapi_proxy_test.h

 // Copyright (c) 2012 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.
 
 #include <map>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 115 matching lines @@
               base::WaitableEvent* shutdown_event) {
       ipc_message_loop_ = ipc_message_loop;
       shutdown_event_ = shutdown_event;
     }
 
     void set_browser_sender(IPC::Sender* browser_sender) {
       browser_sender_ = browser_sender;
     }
 
     // ProxyChannel::Delegate implementation.
-    base::MessageLoopProxy* GetIPCMessageLoop() override;
+    base::SingleThreadTaskRunner* GetIPCTaskRunner() override;
     base::WaitableEvent* GetShutdownEvent() override;
     IPC::PlatformFileForTransit ShareHandleWithRemote(
         base::PlatformFile handle,
         base::ProcessId remote_pid,
         bool should_close_source) override;
 
     // PluginDispatcher::PluginDelegate implementation.
     std::set<PP_Instance>* GetGloballySeenInstanceIDSet() override;
     uint32 Register(PluginDispatcher* plugin_dispatcher) override;
     void Unregister(uint32 plugin_dispatcher_id) override;
@@ skipping 119 matching lines @@
     }
     ~DelegateMock() override {}
 
     void Init(base::MessageLoopProxy* ipc_message_loop,
               base::WaitableEvent* shutdown_event) {
       ipc_message_loop_ = ipc_message_loop;
       shutdown_event_ = shutdown_event;
     }
 
     // ProxyChannel::Delegate implementation.
-    base::MessageLoopProxy* GetIPCMessageLoop() override;
+    base::MessageLoopProxy* GetIPCTaskRunner() override;
     base::WaitableEvent* GetShutdownEvent() override;
     IPC::PlatformFileForTransit ShareHandleWithRemote(
         base::PlatformFile handle,
         base::ProcessId remote_pid,
         bool should_close_source) override;
 
    private:
     base::MessageLoopProxy* ipc_message_loop_;  // Weak
     base::WaitableEvent* shutdown_event_;  // Weak
 
@@ skipping 78 matching lines @@
 //   EXPECT_VAR_IS_STRING("foo", my_var);
 #define EXPECT_VAR_IS_STRING(str, var) { \
   StringVar* sv = StringVar::FromPPVar(var); \
   EXPECT_TRUE(sv); \
   if (sv) \
     EXPECT_EQ(str, sv->value()); \
 }
 
 }  // namespace proxy
 }  // namespace ppapi