gpu: Introduce GpuInit.

services/ui/gpu/gpu_service_internal.cc

Index: services/ui/gpu/gpu_service_internal.cc
diff --git a/services/ui/gpu/gpu_service_internal.cc b/services/ui/gpu/gpu_service_internal.cc
index f68197d02f7344be9b4832653ffff71d1e11f7a3..3539bb41fec5dc6ae34fd02661648aea256d53e2 100644
--- a/services/ui/gpu/gpu_service_internal.cc
+++ b/services/ui/gpu/gpu_service_internal.cc
@@ -5,7 +5,6 @@
 #include "services/ui/gpu/gpu_service_internal.h"
 
 #include "base/memory/shared_memory.h"
-#include "base/memory/singleton.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
@@ -45,12 +44,16 @@ void EstablishGpuChannelDone(
 
 }  // namespace
 
-GpuServiceInternal::GpuServiceInternal()
+GpuServiceInternal::GpuServiceInternal(
+    gpu::GpuWatchdogThread* watchdog_thread,
+    gpu::GpuMemoryBufferFactory* gpu_memory_buffer_factory)
     : main_task_runner_(base::ThreadTaskRunnerHandle::Get()),
       shutdown_event_(base::WaitableEvent::ResetPolicy::MANUAL,
                       base::WaitableEvent::InitialState::NOT_SIGNALED),
       gpu_thread_("GpuThread"),
       io_thread_("GpuIOThread"),
+      watchdog_thread_(watchdog_thread),
+      gpu_memory_buffer_factory_(gpu_memory_buffer_factory),
       binding_(this) {}
 
 GpuServiceInternal::~GpuServiceInternal() {
@@ -170,11 +173,6 @@ void GpuServiceInternal::InitializeOnGpuThread(base::WaitableEvent* event) {
   ui::OzonePlatform::InitializeForGPU();
 #endif
 
-  if (gpu::GetNativeGpuMemoryBufferType() != gfx::EMPTY_BUFFER) {
-    gpu_memory_buffer_factory_ =
-        gpu::GpuMemoryBufferFactory::CreateNativeType();
-  }
-
   if (!gl::init::InitializeGLOneOff())
     VLOG(1) << "gl::init::InitializeGLOneOff failed";
 
@@ -186,12 +184,11 @@ void GpuServiceInternal::InitializeOnGpuThread(base::WaitableEvent* event) {
   // Defer creation of the render thread. This is to prevent it from handling
   // IPC messages before the sandbox has been enabled and all other necessary
   // initialization has succeeded.
-  watchdog_thread_ = gpu::GpuWatchdogThread::Create();
   gpu_channel_manager_.reset(new gpu::GpuChannelManager(
-      gpu_preferences_, this, watchdog_thread_.get(),
+      gpu_preferences_, this, watchdog_thread_,
       base::ThreadTaskRunnerHandle::Get().get(), io_thread_.task_runner().get(),
       &shutdown_event_, owned_sync_point_manager_.get(),
-      gpu_memory_buffer_factory_.get()));
+      gpu_memory_buffer_factory_));
 
   media_service_.reset(new media::MediaService(gpu_channel_manager_.get()));
   event->Signal();
@@ -235,7 +232,6 @@ void GpuServiceInternal::Initialize(const InitializeCallback& callback) {
                             base::Unretained(this), &event));
   event.Wait();
 
-  // TODO(sad): Get the real GPUInfo.
   callback.Run(gpu_info_);
 }
 
@@ -252,10 +248,4 @@ void GpuServiceInternal::EstablishGpuChannel(
                               allow_real_time_streams, callback);
 }
 
-// static
-GpuServiceInternal* GpuServiceInternal::GetInstance() {
-  return base::Singleton<GpuServiceInternal,
-                         base::LeakySingletonTraits<GpuServiceInternal>>::get();
-}
-
 }  // namespace ui