Impl mus::mojom::GpuService to enable using Chrome IPC version gpu CmdBuf in mus

components/bitmap_uploader/bitmap_uploader.cc

Index: components/bitmap_uploader/bitmap_uploader.cc
diff --git a/components/bitmap_uploader/bitmap_uploader.cc b/components/bitmap_uploader/bitmap_uploader.cc
index 5c255dbf2f8a2b68dc45626b5ed808b730b0b526..557218287f9404a4fef274a50e26ce771f8f8b44 100644
--- a/components/bitmap_uploader/bitmap_uploader.cc
+++ b/components/bitmap_uploader/bitmap_uploader.cc
@@ -10,6 +10,7 @@
 #include "base/bind.h"
 #include "base/callback.h"
 #include "components/mus/public/cpp/gles2_context.h"
+#include "components/mus/public/cpp/gpu_service.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_surface.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
@@ -44,11 +45,18 @@ void BitmapUploader::Init(shell::Connector* connector) {
   surface_->BindToThread();
   surface_->set_client(this);
 
-  connector->ConnectToInterface("mojo:mus", &gpu_service_);
-  mus::mojom::CommandBufferPtr gles2_client;
-  gpu_service_->CreateOffscreenGLES2Context(GetProxy(&gles2_client));
-  gles2_context_.reset(new mus::GLES2Context(
-      std::vector<int32_t>(), gles2_client.PassInterface().PassHandle()));
+  mojo::ScopedMessagePipeHandle scoped_handle;
+  if (!mus::GpuService::UseChromeGpuCommandBuffer()) {
+    connector->ConnectToInterface("mojo:mus", &gpu_service_);
+    mus::mojom::CommandBufferPtr gles2_client;
+    gpu_service_->CreateOffscreenGLES2Context(GetProxy(&gles2_client));
+    scoped_handle = gles2_client.PassInterface().PassHandle();
+  } else {
+    mus::GpuService::Initialize(connector);
+  }
+
+  gles2_context_.reset(
+      new mus::GLES2Context(std::vector<int32_t>(), std::move(scoped_handle)));
   DCHECK(gles2_context_->Initialize());
 }
 
@@ -97,10 +105,10 @@ void BitmapUploader::Upload() {
       mojo::CreateDefaultSQS(bounds.size()));
 
   if (bitmap_.get()) {
-    gpu::gles2::GLES2Interface* gl = gles2_context_->interface();
     mojo::Size bitmap_size;
     bitmap_size.width = width_;
     bitmap_size.height = height_;
+    gpu::gles2::GLES2Interface* gl = gles2_context_->interface();
     GLuint texture_id = BindTextureForSize(bitmap_size);
     gl->TexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap_size.width,
                       bitmap_size.height, TextureFormat(), GL_UNSIGNED_BYTE,