Add Media.ArcGpuVideoDecodeAccelerator.InitializeResult to histograms

chrome/gpu/arc_gpu_video_decode_accelerator.h

Index: chrome/gpu/arc_gpu_video_decode_accelerator.h
diff --git a/chrome/gpu/arc_gpu_video_decode_accelerator.h b/chrome/gpu/arc_gpu_video_decode_accelerator.h
index 2747c55a13462fe5628902a8becc0930d54f3f7d..78b265312ba2bb34a7cacc3d6741960e3e7f2f19 100644
--- a/chrome/gpu/arc_gpu_video_decode_accelerator.h
+++ b/chrome/gpu/arc_gpu_video_decode_accelerator.h
@@ -36,6 +36,9 @@ class ArcGpuVideoDecodeAccelerator
   ArcVideoAccelerator::Result Initialize(
       const Config& config,
       ArcVideoAccelerator::Client* client) override;
+  ArcVideoAccelerator::Result InitializeTask(

[Owen Lin, 2016/11/17 08:28:28]

Put in private.

[johnylin1, 2016/11/18 03:26:32]

Done.

+      const Config& config,
+      ArcVideoAccelerator::Client* client);
   void SetNumberOfOutputBuffers(size_t number) override;
   void BindSharedMemory(PortType port,
                         uint32_t index,