Stop assuming anything about result of MFStartup()

media/gpu/dxva_video_decode_accelerator_win.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.
 
 #include "media/gpu/dxva_video_decode_accelerator_win.h"
 
 #include <memory>
 
 #if !defined(OS_WIN)
 #error This file should only be built on Windows.
@@ skipping 589 matching lines @@
 
   RETURN_AND_NOTIFY_ON_FAILURE(gl::GLFence::IsSupported(),
                                "GL fences are unsupported", PLATFORM_FAILURE,
                                false);
 
   State state = GetState();
   RETURN_AND_NOTIFY_ON_FAILURE((state == kUninitialized),
                                "Initialize: invalid state: " << state,
                                ILLEGAL_STATE, false);
 
-  InitializeMediaFoundation();
+  RETURN_AND_NOTIFY_ON_FAILURE(InitializeMediaFoundation(),
+                               "Could not initialize Media Foundartion",
+                               PLATFORM_FAILURE, false);
 
   config_ = config;
 
   RETURN_AND_NOTIFY_ON_FAILURE(InitDecoder(config.profile),
                                "Failed to initialize decoder", PLATFORM_FAILURE,
                                false);
 
   RETURN_AND_NOTIFY_ON_FAILURE(GetStreamsInfoAndBufferReqs(),
                                "Failed to get input/output stream info.",
                                PLATFORM_FAILURE, false);
@@ skipping 2316 matching lines @@
       base::Bind(&DXVAVideoDecodeAccelerator::DecodePendingInputBuffers,
                  base::Unretained(this)));
 }
 
 uint32_t DXVAVideoDecodeAccelerator::GetTextureTarget() const {
   bool provide_nv12_textures = share_nv12_textures_ || copy_nv12_textures_;
   return provide_nv12_textures ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;
 }
 
 }  // namespace media