Add //mojo/edk/platform and move platform_task_runners.h there.

mojo/edk/embedder/embedder.h

 // 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.
 
 #ifndef MOJO_EDK_EMBEDDER_EMBEDDER_H_
 #define MOJO_EDK_EMBEDDER_EMBEDDER_H_
 
 #include <functional>
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "mojo/edk/embedder/channel_info_forward.h"
-#include "mojo/edk/embedder/platform_task_runner.h"
 #include "mojo/edk/embedder/process_type.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/embedder/slave_info.h"
+#include "mojo/edk/platform/task_runner.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
 namespace mojo {
 namespace embedder {
 
 struct Configuration;
 class PlatformSupport;
 class ProcessDelegate;
 
 // Basic configuration/initialization ------------------------------------------
@@ skipping 54 matching lines @@
 //   - |delegate_thread_task_runner|, |process_delegate|, and
 //     |io_thread_task_runner| should live at least until
 //     |ShutdownIPCSupport()|'s callback has been run or
 //     |ShutdownIPCSupportOnIOThread()| has completed.
 //   - For slave processes (i.e., |process_type| is |ProcessType::SLAVE|),
 //     |platform_handle| should be connected to the handle passed to
 //     |ConnectToSlave()| (in the master process). For other processes,
 //     |platform_handle| is ignored (and should not be valid).
 void InitIPCSupport(
     ProcessType process_type,
-    util::RefPtr<PlatformTaskRunner>&& delegate_thread_task_runner,
+    util::RefPtr<platform::TaskRunner>&& delegate_thread_task_runner,
     ProcessDelegate* process_delegate,
-    util::RefPtr<PlatformTaskRunner>&& io_thread_task_runner,
+    util::RefPtr<platform::TaskRunner>&& io_thread_task_runner,
     ScopedPlatformHandle platform_handle);
 
 // Shuts down the subsystem initialized by |InitIPCSupport()|. This must be
 // called on the I/O thread (given to |InitIPCSupport()|). This completes
 // synchronously and does not result in a call to the process delegate's
 // |OnShutdownComplete()|.
 void ShutdownIPCSupportOnIOThread();
 
 // Like |ShutdownIPCSupportOnIOThread()|, but may be called from any thread,
 // signaling shutdown completion via the process delegate's
@@ skipping 20 matching lines @@
 //
 // |did_connect_to_slave_callback| will be run either using
 // |did_connect_to_slave_runner| (if non-null) or on the I/O thread, once the
 // |ChannelInfo*| is valid.
 //
 // TODO(vtl): The API is a little crazy with respect to the |ChannelInfo*|.
 ScopedMessagePipeHandle ConnectToSlave(
     SlaveInfo slave_info,
     ScopedPlatformHandle platform_handle,
     const base::Closure& did_connect_to_slave_callback,
-    util::RefPtr<PlatformTaskRunner>&& did_connect_to_slave_runner,
+    util::RefPtr<platform::TaskRunner>&& did_connect_to_slave_runner,
     std::string* platform_connection_id,
     ChannelInfo** channel_info);
 
 // Called in a slave process to connect it to the IPC system. (This should only
 // be called in a process initialized (using |InitIPCSupport()|) with process
 // type |ProcessType::SLAVE|.) This should be called exactly once in each slave
 // process.
 //
 // See |ConnectToSlave()| for details. (Note that if this fails in any way,
 // e.g., if |platform_connection_id| is invalid, this will CHECK-fail and
 // terminate the process.) |channel_info|, |did_connect_to_master_callback|, and
 // |did_connect_to_master_runner| are analagous to in |ConnectToSlave()|.
 //
 // TODO(vtl): The API is a little crazy with respect to the |ChannelInfo*|.
 ScopedMessagePipeHandle ConnectToMaster(
     const std::string& platform_connection_id,
     const base::Closure& did_connect_to_master_callback,
-    util::RefPtr<PlatformTaskRunner>&& did_connect_to_master_runner,
+    util::RefPtr<platform::TaskRunner>&& did_connect_to_master_runner,
     ChannelInfo** channel_info);
 
 // A "channel" is a connection on top of an OS "pipe", on top of which Mojo
 // message pipes (etc.) can be multiplexed. It must "live" on some I/O thread.
 //
 // There are two channel creation APIs: |CreateChannelOnIOThread()| creates a
 // channel synchronously and must be called from the I/O thread, while
 // |CreateChannel()| is asynchronous and may be called from any thread.
 // |DestroyChannel()| is used to destroy the channel in either case and may be
 // called from any thread, but completes synchronously when called from the I/O
@@ skipping 38 matching lines @@
 // |ChannelInfo*|, which should eventually be passed to |DestroyChannel()| to
 // tear down the channel; the callback will be called using
 // |did_create_channel_runner| if that is non-null, or otherwise it will be
 // posted to the I/O thread. Returns a handle to the bootstrap message pipe.
 //
 // Note: This should only be used to establish a channel with a process of type
 // |ProcessType::NONE|. This function may be removed in the future.
 ScopedMessagePipeHandle CreateChannel(
     ScopedPlatformHandle platform_handle,
     const base::Callback<void(ChannelInfo*)>& did_create_channel_callback,
-    util::RefPtr<PlatformTaskRunner>&& did_create_channel_runner);
+    util::RefPtr<platform::TaskRunner>&& did_create_channel_runner);
 
 // Destroys a channel that was created using |ConnectToMaster()|,
 // |ConnectToSlave()|, |CreateChannel()|, or |CreateChannelOnIOThread()|; must
 // be called from the channel's I'O thread. Completes synchronously (and posts
 // no tasks).
 void DestroyChannelOnIOThread(ChannelInfo* channel_info);
 
 // Like |DestroyChannelOnIOThread()|, but asynchronous and may be called from
 // any thread. The callback will be called using |did_destroy_channel_runner|
 // if that is non-null, or otherwise it will be called on the "channel thread".
 // The "channel thread" must remain alive and continue to process tasks until
 // the callback has been executed.
 void DestroyChannel(
     ChannelInfo* channel_info,
     const base::Closure& did_destroy_channel_callback,
-    util::RefPtr<PlatformTaskRunner>&& did_destroy_channel_runner);
+    util::RefPtr<platform::TaskRunner>&& did_destroy_channel_runner);
 
 // Inform the channel that it will soon be destroyed (doing so is optional).
 // This may be called from any thread, but the caller must ensure that this is
 // called before |DestroyChannel()|.
 void WillDestroyChannelSoon(ChannelInfo* channel_info);
 
 }  // namespace embedder
 }  // namespace mojo
 
 #endif  // MOJO_EDK_EMBEDDER_EMBEDDER_H_