Move test-only stuff from cc/debug/ to cc/test

cc/debug/test_context_support.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 "cc/debug/test_context_support.h"
-
-#include "base/message_loop/message_loop.h"
-
-namespace cc {
-
-TestContextSupport::TestContextSupport() {}
-TestContextSupport::~TestContextSupport() {}
-
-void TestContextSupport::SignalSyncPoint(uint32 sync_point,
-                                         const base::Closure& callback) {
-  sync_point_callbacks_.push_back(callback);
-}
-
-void TestContextSupport::SignalQuery(uint32 query,
-                                     const base::Closure& callback) {
-  sync_point_callbacks_.push_back(callback);
-}
-
-void TestContextSupport::SendManagedMemoryStats(
-    const gpu::ManagedMemoryStats& stats) {
-}
-
-void TestContextSupport::CallAllSyncPointCallbacks() {
-  for (size_t i = 0; i < sync_point_callbacks_.size(); ++i) {
-    base::MessageLoop::current()->PostTask(
-        FROM_HERE, sync_point_callbacks_[i]);
-  }
-  sync_point_callbacks_.clear();
-}
-
-}  // namespace cc