Compute GpuDriverBugWorkarounds only one time in the GPU process

content/common/gpu/gpu_channel_test_common.h

Index: content/common/gpu/gpu_channel_test_common.h
diff --git a/content/common/gpu/gpu_channel_test_common.h b/content/common/gpu/gpu_channel_test_common.h
index 1dacc6a07b6707695e3eea52252b50bf3f9a7258..619258643cf97d7326b5653950721e8ff256a361 100644
--- a/content/common/gpu/gpu_channel_test_common.h
+++ b/content/common/gpu/gpu_channel_test_common.h
@@ -66,12 +66,14 @@ class TestGpuChannelManagerDelegate : public GpuChannelManagerDelegate {
 
 class TestGpuChannelManager : public GpuChannelManager {
  public:
-  TestGpuChannelManager(const gpu::GpuPreferences& gpu_preferences,
-                        GpuChannelManagerDelegate* delegate,
-                        base::SingleThreadTaskRunner* task_runner,
-                        base::SingleThreadTaskRunner* io_task_runner,
-                        gpu::SyncPointManager* sync_point_manager,
-                        GpuMemoryBufferFactory* gpu_memory_buffer_factory);
+  TestGpuChannelManager(
+      const gpu::GpuPreferences& gpu_preferences,
+      const gpu::GpuDriverBugWorkarounds& gpu_driver_bug_workarounds,
+      GpuChannelManagerDelegate* delegate,
+      base::SingleThreadTaskRunner* task_runner,
+      base::SingleThreadTaskRunner* io_task_runner,
+      gpu::SyncPointManager* sync_point_manager,
+      GpuMemoryBufferFactory* gpu_memory_buffer_factory);
   ~TestGpuChannelManager() override;
 
  protected:
@@ -125,6 +127,7 @@ class GpuChannelTestCommon : public testing::Test {
 
  private:
   gpu::GpuPreferences gpu_preferences_;
+  gpu::GpuDriverBugWorkarounds gpu_driver_bug_workarounds_;
   scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
   scoped_refptr<base::TestSimpleTaskRunner> io_task_runner_;
   scoped_ptr<gpu::SyncPointManager> sync_point_manager_;