Mojo: Wrap the satisfied/unsatisfied wait flags state in a single object.

mojo/system/platform_handle_dispatcher.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_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
 #define MOJO_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
 
 #include "base/macros.h"
 #include "mojo/embedder/scoped_platform_handle.h"
 #include "mojo/system/simple_dispatcher.h"
@@ skipping 32 matching lines @@
       CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
   virtual void StartSerializeImplNoLock(Channel* channel,
                                         size_t* max_size,
                                         size_t* max_platform_handles) OVERRIDE;
   virtual bool EndSerializeAndCloseImplNoLock(
       Channel* channel,
       void* destination,
       size_t* actual_size,
       embedder::PlatformHandleVector* platform_handles) OVERRIDE;
 
-  // |SimpleDispatcher| methods:
-  virtual MojoWaitFlags SatisfiedFlagsNoLock() const OVERRIDE;
-  virtual MojoWaitFlags SatisfiableFlagsNoLock() const OVERRIDE;
+  // |SimpleDispatcher| method:
+  virtual WaitFlagsState GetWaitFlagsStateNoLock() const OVERRIDE;
 
   embedder::ScopedPlatformHandle platform_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformHandleDispatcher);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_