V4L2VDA: Typo fix

Fix typo in TryToSetupDecodeOnSeparateThread method to set
decode_client_ properly in V4L2VideoDecodeAccelerator and
V4L2SliceVideoDecodeAccelerator classes.

BUG=

Review-Url: https://codereview.chromium.org/2044033002
Cr-Commit-Position: refs/heads/master@{#398268}

media/gpu/v4l2_slice_video_decode_accelerator.cc

@@ -2791,7 +2791,7 @@ void V4L2SliceVideoDecodeAccelerator::PictureCleared() {
 bool V4L2SliceVideoDecodeAccelerator::TryToSetupDecodeOnSeparateThread(
     const base::WeakPtr<Client>& decode_client,
     const scoped_refptr<base::SingleThreadTaskRunner>& decode_task_runner) {
-  decode_client_ = decode_client_;
+  decode_client_ = decode_client;
   decode_task_runner_ = decode_task_runner;
   return true;
 }

media/gpu/v4l2_video_decode_accelerator.cc

@@ -514,7 +514,7 @@ void V4L2VideoDecodeAccelerator::Destroy() {
 bool V4L2VideoDecodeAccelerator::TryToSetupDecodeOnSeparateThread(
     const base::WeakPtr<Client>& decode_client,
     const scoped_refptr<base::SingleThreadTaskRunner>& decode_task_runner) {
-  decode_client_ = decode_client_;
+  decode_client_ = decode_client;
   decode_task_runner_ = decode_task_runner;
   return true;
 }