cc: GPU rasterize tiles synchronously in PrepareToDraw

cc/resources/tile_manager_perftest.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 "base/time/time.h"
 #include "cc/debug/lap_timer.h"
 #include "cc/resources/raster_buffer.h"
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_priority.h"
 #include "cc/test/begin_frame_args_test.h"
@@ skipping 21 matching lines @@
 
 static const int kTimeLimitMillis = 2000;
 static const int kWarmupRuns = 5;
 static const int kTimeCheckInterval = 10;
 
 class FakeRasterizerImpl : public Rasterizer, public RasterizerTaskClient {
  public:
   // Overridden from Rasterizer:
   void SetClient(RasterizerClient* client) override {}
   void Shutdown() override {}
-  void ScheduleTasks(RasterTaskQueue* queue) override {
-    for (RasterTaskQueue::Item::Vector::const_iterator it =
-             queue->items.begin();
-         it != queue->items.end();
-         ++it) {
-      RasterTask* task = it->task;
+  void RunTasks(RasterTaskQueue* queue) override {
+    for (auto& item : queue->items) {
+      RasterTask* task = item.task;
 
       task->WillSchedule();
       task->ScheduleOnOriginThread(this);
+      task->DidSchedule();
+
+      task->WillRun();
+      task->RunOnWorkerThread();
+      task->DidRun();
+
+      completed_tasks_.push_back(task);
+    }
+  }
+  void ScheduleTasks(RasterTaskQueue* queue) override {
+    for (auto& item : queue->items) {
+      RasterTask* task = item.task;
+
+      task->WillSchedule();
+      task->ScheduleOnOriginThread(this);
       task->DidSchedule();
 
       completed_tasks_.push_back(task);
     }
   }
   void CheckForCompletedTasks() override {
-    for (RasterTask::Vector::iterator it = completed_tasks_.begin();
-         it != completed_tasks_.end();
-         ++it) {
-      RasterTask* task = it->get();
-
+    for (auto& task : completed_tasks_) {
       task->WillComplete();
       task->CompleteOnOriginThread(this);
       task->DidComplete();
 
       task->RunReplyOnOriginThread();
     }
     completed_tasks_.clear();
   }
 
   // Overridden from RasterizerTaskClient:
@@ skipping 416 matching lines @@
   RunEvictionQueueConstructAndIterateTest("10_128", 10, 128);
   RunEvictionQueueConstructAndIterateTest("50_16", 50, 16);
   RunEvictionQueueConstructAndIterateTest("50_32", 50, 32);
   RunEvictionQueueConstructAndIterateTest("50_64", 50, 64);
   RunEvictionQueueConstructAndIterateTest("50_128", 50, 128);
 }
 
 }  // namespace
 
 }  // namespace cc