Add offset support to BitstreamBuffer.

content/common/gpu/media/vaapi_video_encode_accelerator.cc

Index: content/common/gpu/media/vaapi_video_encode_accelerator.cc
diff --git a/content/common/gpu/media/vaapi_video_encode_accelerator.cc b/content/common/gpu/media/vaapi_video_encode_accelerator.cc
index 495f2f1b6876dfd7f6f8916dd9b612e7991deb83..00f38cd3d0d35115a23e99b413348eeb2d99f4aa 100644
--- a/content/common/gpu/media/vaapi_video_encode_accelerator.cc
+++ b/content/common/gpu/media/vaapi_video_encode_accelerator.cc
@@ -96,11 +96,10 @@ struct VaapiVideoEncodeAccelerator::InputFrameRef {
 };
 
 struct VaapiVideoEncodeAccelerator::BitstreamBufferRef {
-  BitstreamBufferRef(int32 id, scoped_ptr<base::SharedMemory> shm, size_t size)
-      : id(id), shm(shm.Pass()), size(size) {}
+  BitstreamBufferRef(int32 id, scoped_ptr<SharedMemoryRegion> shm)
+      : id(id), shm(shm.Pass()) {}

[Pawel Osciak, 2015/12/31 02:05:54]

std::move

[Owen Lin, 2016/01/04 08:54:18]

Done.

   const int32 id;
   const scoped_ptr<base::SharedMemory> shm;
-  const size_t size;
 };
 
 media::VideoEncodeAccelerator::SupportedProfiles
@@ -663,15 +662,14 @@ void VaapiVideoEncodeAccelerator::UseOutputBitstreamBuffer(
     return;
   }
 
-  scoped_ptr<base::SharedMemory> shm(
-      new base::SharedMemory(buffer.handle(), false));
-  if (!shm->Map(buffer.size())) {
+  scoped_ptr<SharedMemoryRegion> shm(new SharedMemoryRegion(buffer, false));
+  if (!shm->Map()) {
     NOTIFY_ERROR(kPlatformFailureError, "Failed mapping shared memory.");
     return;
   }
 
-  scoped_ptr<BitstreamBufferRef> buffer_ref(
-      new BitstreamBufferRef(buffer.id(), shm.Pass(), buffer.size()));
+  scoped_ptr<BitstreamBufferRef> buffer_ref(new BitstreamBufferRef(
+      buffer.id(), shm.Pass(), buffer.offset(), buffer.size()));

[Pawel Osciak, 2015/12/31 02:05:54]

I think we don't have this constructor in BitstreamBufferRef?

[Owen Lin, 2016/01/04 08:54:18]

Done.

 
   encoder_thread_task_runner_->PostTask(
       FROM_HERE,