Convert Pass()→std::move() in //content

content/common/gpu/media/gpu_video_encode_accelerator.cc

Index: content/common/gpu/media/gpu_video_encode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_video_encode_accelerator.cc b/content/common/gpu/media/gpu_video_encode_accelerator.cc
index 821fbd22db44e339aaa70c5273f0c2210528e9dc..ff80628bf57b5fc5220db828579e7729f6c2080b 100644
--- a/content/common/gpu/media/gpu_video_encode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_encode_accelerator.cc
@@ -213,7 +213,7 @@ GpuVideoEncodeAccelerator::CreateV4L2VEA() {
   if (device)
     encoder.reset(new V4L2VideoEncodeAccelerator(device));
 #endif
-  return encoder.Pass();
+  return encoder;
 }
 
 // static
@@ -225,7 +225,7 @@ GpuVideoEncodeAccelerator::CreateVaapiVEA() {
   if (!cmd_line->HasSwitch(switches::kDisableVaapiAcceleratedVideoEncode))
     encoder.reset(new VaapiVideoEncodeAccelerator());
 #endif
-  return encoder.Pass();
+  return encoder;
 }
 
 // static
@@ -235,7 +235,7 @@ GpuVideoEncodeAccelerator::CreateAndroidVEA() {
 #if defined(OS_ANDROID) && defined(ENABLE_WEBRTC)
   encoder.reset(new AndroidVideoEncodeAccelerator());
 #endif
-  return encoder.Pass();
+  return encoder;
 }
 
 void GpuVideoEncodeAccelerator::OnEncode(