GL Implementation for GPU Discardable

gpu/ipc/service/gpu_channel.h

Index: gpu/ipc/service/gpu_channel.h
diff --git a/gpu/ipc/service/gpu_channel.h b/gpu/ipc/service/gpu_channel.h
index bd583b2674eee5e835c66d2ab208dc059bd77cf3..9ca8e8986947d69fb457ffa6f80d878552f40080 100644
--- a/gpu/ipc/service/gpu_channel.h
+++ b/gpu/ipc/service/gpu_channel.h
@@ -86,6 +86,7 @@ class GPU_EXPORT GpuChannel : public IPC::Listener, public FilteredSender {
              GpuWatchdogThread* watchdog,
              scoped_refptr<gl::GLShareGroup> share_group,
              scoped_refptr<gles2::MailboxManager> mailbox_manager,
+             scoped_refptr<ServiceDiscardableManager> discardable_manager,
              scoped_refptr<PreemptionFlag> preempting_flag,
              scoped_refptr<PreemptionFlag> preempted_flag,
              scoped_refptr<base::SingleThreadTaskRunner> task_runner,
@@ -155,6 +156,10 @@ class GPU_EXPORT GpuChannel : public IPC::Listener, public FilteredSender {
 
   gl::GLShareGroup* share_group() const { return share_group_.get(); }
 
+  const scoped_refptr<ServiceDiscardableManager>& discardable_manager() const {
+    return discardable_manager_;
+  }
+
   GpuCommandBufferStub* LookupCommandBuffer(int32_t route_id);
 
   void LoseAllContexts();
@@ -264,6 +269,8 @@ class GPU_EXPORT GpuChannel : public IPC::Listener, public FilteredSender {
 
   GpuWatchdogThread* const watchdog_;
 
+  scoped_refptr<ServiceDiscardableManager> discardable_manager_;
+
   const bool is_gpu_host_;
 
   // Member variables should appear before the WeakPtrFactory, to ensure that