Add a GpuMemoryBuffer pool that creates hardware backed VideoFrames.

media/renderers/video_renderer_impl_unittest.cc

Index: media/renderers/video_renderer_impl_unittest.cc
diff --git a/media/renderers/video_renderer_impl_unittest.cc b/media/renderers/video_renderer_impl_unittest.cc
index 18a0f77dfcf9b0170beb4f5b417514645ecfadca..1256bc7a2cec7bfab07c43296f353c4c69e1d396 100644
--- a/media/renderers/video_renderer_impl_unittest.cc
+++ b/media/renderers/video_renderer_impl_unittest.cc
@@ -59,9 +59,11 @@ class VideoRendererImplTest : public testing::TestWithParam<bool> {
         base::Bind(&MockCB::FrameReceived, base::Unretained(&mock_cb_)),
         message_loop_.task_runner()));
 
-    renderer_.reset(new VideoRendererImpl(
-        message_loop_.message_loop_proxy(), null_video_sink_.get(),
-        decoders.Pass(), true, new MediaLog()));
+    renderer_.reset(new VideoRendererImpl(message_loop_.message_loop_proxy(),
+                                          null_video_sink_.get(),
+                                          decoders.Pass(), true,
+                                          nullptr,  // gpu_factories
+                                          new MediaLog()));
     if (!GetParam())
       renderer_->disable_new_video_renderer_for_testing();
     renderer_->SetTickClockForTesting(scoped_ptr<base::TickClock>(tick_clock_));