vda_unittest: Verify the visible rectangle of returned picture.

media/gpu/video_decode_accelerator_unittest.cc

 // Copyright (c) 2012 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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 708 matching lines @@
   LOG_ASSERT(1U == active_textures_.erase(picture_buffer_id));
 }
 
 void GLRenderingVDAClient::PictureReady(const Picture& picture) {
   // We shouldn't be getting pictures delivered after Reset has completed.
   LOG_ASSERT(state_ < CS_RESET);
 
   if (decoder_deleted())
     return;
 
+  gfx::Rect visible_rect = picture.visible_rect();
+  EXPECT_TRUE(visible_rect.IsEmpty() || visible_rect == gfx::Rect(frame_size_));
+
   base::TimeTicks now = base::TimeTicks::Now();
 
   frame_delivery_times_.push_back(now);
 
   // Save the decode time of this picture.
   std::map<int, base::TimeTicks>::iterator it =
       decode_start_time_.find(picture.bitstream_buffer_id());
   ASSERT_NE(decode_start_time_.end(), it);
   decode_time_.push_back(now - it->second);
   decode_start_time_.erase(it);
@@ skipping 1065 matching lines @@
   media::DXVAVideoDecodeAccelerator::PreSandboxInitialization();
 #endif
 
   media::g_env =
       reinterpret_cast<media::VideoDecodeAcceleratorTestEnvironment*>(
           testing::AddGlobalTestEnvironment(
               new media::VideoDecodeAcceleratorTestEnvironment()));
 
   return RUN_ALL_TESTS();
 }