EDK: Change Awakable::Awake()'s context, etc., to be a uint64_t.

mojo/edk/system/core_test_base.cc

 // 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.
 
 #include "mojo/edk/system/core_test_base.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 154 matching lines @@
       MojoMapBufferFlags /*flags*/,
       std::unique_ptr<platform::PlatformSharedBufferMapping>* /*mapping*/)
       override {
     info_->IncrementMapBufferCallCount();
     mutex().AssertHeld();
     return MOJO_RESULT_UNIMPLEMENTED;
   }
 
   MojoResult AddAwakableImplNoLock(Awakable* awakable,
                                    MojoHandleSignals /*signals*/,
-                                   uint32_t /*context*/,
+                                   uint64_t /*context*/,
                                    HandleSignalsState* signals_state) override {
     info_->IncrementAddAwakableCallCount();
     mutex().AssertHeld();
     if (signals_state)
       *signals_state = HandleSignalsState();
     if (info_->IsAddAwakableAllowed()) {
       info_->AwakableWasAdded(awakable);
       return MOJO_RESULT_OK;
     }
 
@@ skipping 269 matching lines @@
 }
 
 void CoreTestBase_MockHandleInfo::AwakableWasAdded(Awakable* awakable) {
   MutexLocker locker(&mutex_);
   added_awakables_.push_back(awakable);
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo