Add Media.ArcGpuVideoDecodeAccelerator.InitializeResult to histograms

chrome/gpu/arc_gpu_video_decode_accelerator.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.
 
 #ifndef CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_
 #define CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <list>
 #include <memory>
 #include <queue>
@@ skipping 87 matching lines @@
   // The information about the dmabuf used as an output buffer.
   struct OutputBufferInfo {
     base::ScopedFD handle;
     std::vector<DmabufPlane> planes;
 
     OutputBufferInfo();
     OutputBufferInfo(OutputBufferInfo&& other);
     ~OutputBufferInfo();
   };
 
+  // The helper method to simplify reporting of the status returned to UMA.
+  ArcVideoAccelerator::Result InitializeTask(
+      const Config& config,
+      ArcVideoAccelerator::Client* client);
+
   // Helper function to validate |port| and |index|.
   bool ValidatePortAndIndex(PortType port, uint32_t index) const;
 
   // Return true if |dmabuf_planes| is valid for a dmabuf |fd|.
   bool VerifyDmabuf(const base::ScopedFD& fd,
                     const std::vector<DmabufPlane>& dmabuf_planes) const;
 
   // Creates an InputRecord for the given |bitstream_buffer_id|. The
   // |buffer_index| is the index of the associated input buffer. The |timestamp|
   // is the time the video frame should be displayed.
@@ skipping 47 matching lines @@
 
   gpu::GpuPreferences gpu_preferences_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcGpuVideoDecodeAccelerator);
 };
 
 }  // namespace arc
 }  // namespace chromeos
 
 #endif  // CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_