Vp9 decoder mft support for AMD apu/gpu

content/common/gpu_host_messages.h

 // Copyright 2016 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/establish_channel_params.h"
@@ skipping 13 matching lines @@
 #include "ui/gfx/ipc/gfx_param_traits.h"
 #include "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
 #include "url/gurl.h"
 #include "url/ipc/url_param_traits.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START GpuMsgStart
 
+IPC_ENUM_TRAITS_VALIDATE(gpu::GpuPreferences::VpxDecodeVendors,
+                         ((value >= gpu::GpuPreferences::VPX_VENDOR_NONE) &&
+                          (value <= gpu::GpuPreferences::VPX_VENDOR_ALL)))

[nasko, 2016/07/13 23:07:10]

This is quite the range of possible values. Do we expect this enum to change
often? I'd guess not and if that is the case, why not verify it is one of the
possible values instead of the full range?

[kplum, 2016/07/14 15:18:58]

I agree with the intent of your feedback but instead I changed the value for
VPX_VENDOR_ALL to 0x07 since this enum is used as a bitfield and checking for
all valid values would be verbose due to the combinations.

+
 IPC_STRUCT_TRAITS_BEGIN(gpu::GPUMemoryUmaStats)
   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_current)
   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_max)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(gpu::VideoMemoryUsageStats)
   IPC_STRUCT_TRAITS_MEMBER(process_map)
   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated)
   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_historical_max)
 IPC_STRUCT_TRAITS_END()
@@ skipping 191 matching lines @@
                      gpu::GPUMemoryUmaStats /* GPU memory UMA stats */)
 
 // Message from GPU to add a GPU log message to the about:gpu page.
 IPC_MESSAGE_CONTROL3(GpuHostMsg_OnLogMessage,
                      int /*severity*/,
                      std::string /* header */,
                      std::string /* message */)
 
 // Sent by the GPU process to indicate that a fields trial has been activated.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_FieldTrialActivated, std::string /* name */)