Mojo: Add BindingsSupportImpl on top of HandleWatcher

mojo/public/tests/simple_bindings_support.h

 // Copyright 2013 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_PUBLIC_TESTS_SIMPLE_BINDINGS_SUPPORT_H_
 #define MOJO_PUBLIC_TESTS_SIMPLE_BINDINGS_SUPPORT_H_
 
 #include <list>
 
 #include "mojo/public/bindings/lib/bindings_support.h"
 
 namespace mojo {
 namespace test {
 
 class SimpleBindingsSupport : public BindingsSupport {
  public:
   SimpleBindingsSupport();
   virtual ~SimpleBindingsSupport();
 
-  virtual bool AsyncWait(Handle handle,
-                         MojoWaitFlags flags,
-                         MojoDeadline deadline,
-                         AsyncWaitCallback* callback) MOJO_OVERRIDE;
-  virtual void CancelWait(AsyncWaitCallback* callback) MOJO_OVERRIDE;
+  virtual AsyncWaitID AsyncWait(Handle handle,
+                                MojoWaitFlags flags,
+                                AsyncWaitCallback* callback) MOJO_OVERRIDE;
+  virtual void CancelWait(AsyncWaitID async_wait_id) MOJO_OVERRIDE;
 
   // This method is called by unit tests to check the status of any handles
   // that we are asynchronously waiting on and to dispatch callbacks for any
   // handles that are ready.
   void Process();
 
  private:
   bool IsReady(Handle handle, MojoWaitFlags flags, MojoResult* result);
 
   struct Waiter {
     Handle handle;
     MojoWaitFlags flags;
-    MojoDeadline deadline;
     AsyncWaitCallback* callback;
   };
 
-  std::list<Waiter> waiters_;
+  typedef std::list<Waiter*> WaiterList;
+  WaiterList waiters_;
 };
 
 }  // namespace test
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_TESTS_SIMPLE_BINDINGS_SUPPORT_H_