Make VEA client of command buffer; move sync. IPC to VDA/VEA::Initialize()

content/common/gpu/media/v4l2_video_decode_accelerator.cc

Index: content/common/gpu/media/v4l2_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/v4l2_video_decode_accelerator.cc b/content/common/gpu/media/v4l2_video_decode_accelerator.cc
index 68baaa85c845c91dda916e544ddd9e15e27431a3..61aa7dfc0b73ea03dbeea0fca2afad757e769142 100644
--- a/content/common/gpu/media/v4l2_video_decode_accelerator.cc
+++ b/content/common/gpu/media/v4l2_video_decode_accelerator.cc
@@ -160,7 +160,6 @@ V4L2VideoDecodeAccelerator::V4L2VideoDecodeAccelerator(
     const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy)
     : child_message_loop_proxy_(base::MessageLoopProxy::current()),
       io_message_loop_proxy_(io_message_loop_proxy),
-      weak_this_(base::AsWeakPtr(this)),
       io_client_(io_client),
       decoder_thread_("V4L2DecoderThread"),
       decoder_state_(kUninitialized),
@@ -184,7 +183,10 @@ V4L2VideoDecodeAccelerator::V4L2VideoDecodeAccelerator(
       device_poll_thread_("V4L2DevicePollThread"),
       make_context_current_(make_context_current),
       egl_display_(egl_display),
-      video_profile_(media::VIDEO_CODEC_PROFILE_UNKNOWN) {}
+      video_profile_(media::VIDEO_CODEC_PROFILE_UNKNOWN),
+      weak_this_factory_(this) {
+  weak_this_ = weak_this_factory_.GetWeakPtr();
+}
 
 V4L2VideoDecodeAccelerator::~V4L2VideoDecodeAccelerator() {
   DCHECK(!decoder_thread_.IsRunning());
@@ -289,9 +291,6 @@ bool V4L2VideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
   }
 
   SetDecoderState(kInitialized);
-
-  child_message_loop_proxy_->PostTask(FROM_HERE, base::Bind(
-      &Client::NotifyInitializeDone, client_));
   return true;
 }
 
@@ -428,6 +427,7 @@ void V4L2VideoDecodeAccelerator::Destroy() {
 
   // We're destroying; cancel all callbacks.
   client_ptr_factory_.reset();
+  weak_this_factory_.InvalidateWeakPtrs();
 
   // If the decoder thread is running, destroy using posted task.
   if (decoder_thread_.IsRunning()) {