cc: Support on demand raster with ganesh

cc/test/pixel_test.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/test/pixel_test.h"
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "cc/base/switches.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/output_surface_client.h"
 #include "cc/output/software_renderer.h"
+#include "cc/resources/raster_worker_pool.h"
 #include "cc/resources/resource_provider.h"
 #include "cc/resources/texture_mailbox_deleter.h"
 #include "cc/test/fake_output_surface_client.h"
 #include "cc/test/paths.h"
 #include "cc/test/pixel_test_output_surface.h"
 #include "cc/test/pixel_test_software_output_device.h"
 #include "cc/test/pixel_test_utils.h"
 #include "cc/test/test_in_process_context_provider.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 111 matching lines @@
 
 void PixelTest::ForceDeviceClip(const gfx::Rect& clip) {
   external_device_clip_rect_ = clip;
 }
 
 void PixelTest::EnableExternalStencilTest() {
   static_cast<PixelTestOutputSurface*>(output_surface_.get())
       ->set_has_external_stencil_test(true);
 }
 
+void PixelTest::RunOnDemandRasterTask(Task* on_demand_raster_task) {
+  TaskGraphRunner task_graph_runner;
+  NamespaceToken on_demand_task_namespace =
+      task_graph_runner.GetNamespaceToken();
+
+  // Construct a task graph that contains this single raster task.
+  TaskGraph graph;
+  graph.nodes.push_back(
+      TaskGraph::Node(on_demand_raster_task,
+                      RasterWorkerPool::kOnDemandRasterTaskPriority,
+                      0u));
+
+  // Schedule task and wait for task graph runner to finish running it.
+  task_graph_runner.ScheduleTasks(on_demand_task_namespace, &graph);
+  task_graph_runner.RunUntilIdle();
+
+  // Collect task now that it has finished running.
+  Task::Vector completed_tasks;
+  task_graph_runner.CollectCompletedTasks(on_demand_task_namespace,
+                                          &completed_tasks);
+  DCHECK_EQ(1u, completed_tasks.size());
+  DCHECK_EQ(completed_tasks[0], on_demand_raster_task);
+}
+
 void PixelTest::SetUpSoftwareRenderer() {
   scoped_ptr<SoftwareOutputDevice> device(new PixelTestSoftwareOutputDevice());
   output_surface_.reset(new PixelTestOutputSurface(device.Pass()));
   output_surface_->BindToClient(output_surface_client_.get());
   shared_bitmap_manager_.reset(new TestSharedBitmapManager());
   resource_provider_ = ResourceProvider::Create(
       output_surface_.get(), shared_bitmap_manager_.get(), 0, false, 1, false);
   renderer_ =
       SoftwareRenderer::Create(
           this, &settings_, output_surface_.get(), resource_provider_.get())
           .PassAs<DirectRenderer>();
 }
 
 }  // namespace cc