Convert content/public for media to Once/Repeating callbacks.

Bug: 1007763
Change-Id: I9c934d13eb233f42734098d0343bb18f5b53099d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1928390Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718944}

content/public/renderer/video_encode_accelerator.cc

@@ -12,13 +12,14 @@
 namespace content {
 
 void CreateVideoEncodeAccelerator(
-    const OnCreateVideoEncodeAcceleratorCallback& callback) {
+    OnCreateVideoEncodeAcceleratorCallback callback) {
   DCHECK(!callback.is_null());
 
   media::GpuVideoAcceleratorFactories* gpu_factories =
       RenderThreadImpl::current()->GetGpuFactories();
   if (!gpu_factories || !gpu_factories->IsGpuVideoAcceleratorEnabled()) {
-    callback.Run(nullptr, std::unique_ptr<media::VideoEncodeAccelerator>());
+    std::move(callback).Run(nullptr,
+                            std::unique_ptr<media::VideoEncodeAccelerator>());
     return;
   }
 
@@ -26,10 +27,10 @@ void CreateVideoEncodeAccelerator(
       gpu_factories->GetTaskRunner();
   base::PostTaskAndReplyWithResult(
       encode_task_runner.get(), FROM_HERE,
-      base::Bind(
+      base::BindOnce(
           &media::GpuVideoAcceleratorFactories::CreateVideoEncodeAccelerator,
           base::Unretained(gpu_factories)),
-      base::Bind(callback, encode_task_runner));
+      base::BindOnce(std::move(callback), encode_task_runner));
 }
 
 media::VideoEncodeAccelerator::SupportedProfiles

content/public/renderer/video_encode_accelerator.h

@@ -17,15 +17,14 @@ namespace content {
 // Called when CreateVideoEncodeAccelerator request is complete.
 // The |vea| object must be accessed on the thread associated with the
 // |encode_task_runner|.
-typedef base::Callback<void(
+typedef base::OnceCallback<void(
     scoped_refptr<base::SingleThreadTaskRunner> encoder_task_runner,
     std::unique_ptr<media::VideoEncodeAccelerator> vea)>
     OnCreateVideoEncodeAcceleratorCallback;
 
 // Generates an instance of media::VideoEncodeAccelerator.
-CONTENT_EXPORT void
-CreateVideoEncodeAccelerator(
-    const OnCreateVideoEncodeAcceleratorCallback& callback);
+CONTENT_EXPORT void CreateVideoEncodeAccelerator(
+    OnCreateVideoEncodeAcceleratorCallback callback);
 
 // Returns list of encoding profiles supported by VideoEncodeAccelerator.
 CONTENT_EXPORT media::VideoEncodeAccelerator::SupportedProfiles