Remove the deprecated Initialize() in video_accelerator.mojom.

The function is deprecated by crrev.com/2036723002.

Now both Android and Chromium have been updated. Remove the
deprecated function which is only used as a transition plan.

BUG=None
TEST=Run android.media.cts.AdaptivePlayback CTS on minnie.

Review-Url: https://codereview.chromium.org/2088173002
Cr-Commit-Position: refs/heads/master@{#401537}

chrome/gpu/gpu_arc_video_service.cc

@@ -177,15 +177,6 @@ void GpuArcVideoService::Initialize(
       static_cast<::arc::mojom::VideoAcceleratorService::Result>(result));
 }
 
-void GpuArcVideoService::DeprecatedInitialize(
-    ::arc::mojom::ArcVideoAcceleratorConfigPtr config,
-    const DeprecatedInitializeCallback& callback) {
-  DVLOG(2) << "DeprecatedInitialize";
-  ArcVideoAccelerator::Result result =
-      accelerator_->Initialize(config.To<ArcVideoAccelerator::Config>(), this);
-  callback.Run(result == ArcVideoAccelerator::SUCCESS);
-}
-
 base::ScopedFD GpuArcVideoService::UnwrapFdFromMojoHandle(
     mojo::ScopedHandle handle) {
   if (!handle.is_valid()) {

chrome/gpu/gpu_arc_video_service.h

@@ -44,9 +44,6 @@ class GpuArcVideoService : public ::arc::mojom::VideoAcceleratorService,
   // ::arc::mojom::VideoAcceleratorService implementation.
   void Initialize(::arc::mojom::ArcVideoAcceleratorConfigPtr config,
                   const InitializeCallback& callback) override;
-  void DeprecatedInitialize(
-      ::arc::mojom::ArcVideoAcceleratorConfigPtr config,
-      const DeprecatedInitializeCallback& callback) override;
   void BindSharedMemory(::arc::mojom::PortType port,
                         uint32_t index,
                         mojo::ScopedHandle ashmem_handle,

components/arc/common/video_accelerator.mojom

@@ -59,8 +59,6 @@ interface VideoAcceleratorService {
     INSUFFICIENT_RESOURCES = 5,
   };
 
-  DeprecatedInitialize@0(ArcVideoAcceleratorConfig config) => (bool result);
-
   [MinVersion=1]
   Initialize@7(ArcVideoAcceleratorConfig config) => (Result result);