Verify returned frames from media::VideoFrame::Wrap*() methods

cc/layers/video_layer_impl_unittest.cc

 // Copyright 2014 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/layers/video_layer_impl.h"
 
 #include "cc/layers/video_frame_provider_client_impl.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/output_surface.h"
 #include "cc/quads/draw_quad.h"
@@ skipping 323 matching lines @@
   DebugSetImplThreadAndMainThreadBlocked(impl.task_runner_provider());
 
   gpu::MailboxHolder mailbox_holder;
   mailbox_holder.mailbox.name[0] = 1;
 
   scoped_refptr<media::VideoFrame> video_frame =
       media::VideoFrame::WrapYUV420NativeTextures(
           mailbox_holder, mailbox_holder, mailbox_holder,
           base::Bind(EmptyCallback), gfx::Size(10, 10), gfx::Rect(10, 10),
           gfx::Size(10, 10), base::TimeDelta());
+  CHECK(video_frame);
   video_frame->metadata()->SetBoolean(media::VideoFrameMetadata::ALLOW_OVERLAY,
                                       true);
   FakeVideoFrameProvider provider;
   provider.set_frame(video_frame);
 
   VideoLayerImpl* video_layer_impl =
       impl.AddChildToRoot<VideoLayerImpl>(&provider, media::VIDEO_ROTATION_0);
   video_layer_impl->SetBounds(layer_size);
   video_layer_impl->SetDrawsContent(true);
 
   gfx::Rect occluded;
   impl.AppendQuadsWithOcclusion(video_layer_impl, occluded);
 
   EXPECT_EQ(1u, impl.quad_list().size());
   const DrawQuad* draw_quad = impl.quad_list().ElementAt(0);
   ASSERT_EQ(DrawQuad::YUV_VIDEO_CONTENT, draw_quad->material);
 
   const YUVVideoDrawQuad* yuv_draw_quad =
       static_cast<const YUVVideoDrawQuad*>(draw_quad);
   EXPECT_EQ(yuv_draw_quad->uv_tex_size.height(),
             (yuv_draw_quad->ya_tex_size.height() + 1) / 2);
   EXPECT_EQ(yuv_draw_quad->uv_tex_size.width(),
             (yuv_draw_quad->ya_tex_size.width() + 1) / 2);
 }
 
 }  // namespace
 }  // namespace cc