Remove implicit conversions from scoped_refptr to T* in mojo/

mojo/embedder/embedder.cc

 // Copyright 2014 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 "mojo/embedder/embedder.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 71 matching lines @@
     system::Core* core,
     ScopedPlatformHandle platform_handle,
     scoped_ptr<ChannelInfo> channel_info,
     scoped_refptr<system::MessagePipe> message_pipe,
     DidCreateChannelCallback callback,
     scoped_refptr<base::TaskRunner> callback_thread_task_runner) {
   channel_info->channel =
       MakeChannel(core, platform_handle.Pass(), message_pipe);
 
   // Hand the channel back to the embedder.
-  if (callback_thread_task_runner) {
+  if (callback_thread_task_runner.get()) {
     callback_thread_task_runner->PostTask(
         FROM_HERE, base::Bind(callback, channel_info.release()));
   } else {
     callback.Run(channel_info.release());
   }
 }
 
 }  // namespace
 
 void Init(scoped_ptr<PlatformSupport> platform_support) {
@@ skipping 45 matching lines @@
   if (rv.is_valid()) {
     io_thread_task_runner->PostTask(FROM_HERE,
                                     base::Bind(&CreateChannelHelper,
                                                base::Unretained(core),
                                                base::Passed(&platform_handle),
                                                base::Passed(&channel_info),
                                                remote_message_pipe.second,
                                                callback,
                                                callback_thread_task_runner));
   } else {
-    (callback_thread_task_runner ? callback_thread_task_runner
-                                 : io_thread_task_runner)
+    (callback_thread_task_runner.get() ? callback_thread_task_runner
+                                       : io_thread_task_runner)
         ->PostTask(FROM_HERE, base::Bind(callback, channel_info.release()));
   }
 
   return rv.Pass();
 }
 
 void DestroyChannelOnIOThread(ChannelInfo* channel_info) {
   DCHECK(channel_info);
-  if (!channel_info->channel) {
+  if (!channel_info->channel.get()) {
     // Presumably, |Init()| on the channel failed.
     return;
   }
 
   channel_info->channel->Shutdown();
   delete channel_info;
 }
 
 // TODO(vtl): Write tests for this.
 void DestroyChannel(ChannelInfo* channel_info) {
   DCHECK(channel_info);
-  DCHECK(channel_info->io_thread_task_runner);
+  DCHECK(channel_info->io_thread_task_runner.get());
 
-  if (!channel_info->channel) {
+  if (!channel_info->channel.get()) {
     // Presumably, |Init()| on the channel failed.
     return;
   }
 
   channel_info->channel->WillShutdownSoon();
   channel_info->io_thread_task_runner->PostTask(
       FROM_HERE, base::Bind(&DestroyChannelOnIOThread, channel_info));
 }
 
 void WillDestroyChannelSoon(ChannelInfo* channel_info) {
@@ skipping 23 matching lines @@
 }
 
 MojoResult PassWrappedPlatformHandle(MojoHandle platform_handle_wrapper_handle,
                                      ScopedPlatformHandle* platform_handle) {
   DCHECK(platform_handle);
 
   system::Core* core = system::entrypoints::GetCore();
   DCHECK(core);
   scoped_refptr<system::Dispatcher> dispatcher(
       core->GetDispatcher(platform_handle_wrapper_handle));
-  if (!dispatcher)
+  if (!dispatcher.get())
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   if (dispatcher->GetType() != system::Dispatcher::kTypePlatformHandle)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   *platform_handle =
       static_cast<system::PlatformHandleDispatcher*>(dispatcher.get())
           ->PassPlatformHandle()
           .Pass();
   return MOJO_RESULT_OK;
 }
 
 }  // namespace embedder
 }  // namespace mojo