GL Implementation for GPU Discardable

gpu/ipc/service/gpu_channel.cc

Index: gpu/ipc/service/gpu_channel.cc
diff --git a/gpu/ipc/service/gpu_channel.cc b/gpu/ipc/service/gpu_channel.cc
index 1d67b33ae2d0022e75a54dbdefcb57551c25c2d9..1a83dc9a6e4e17c8160210d2dcb8500652702a8f 100644
--- a/gpu/ipc/service/gpu_channel.cc
+++ b/gpu/ipc/service/gpu_channel.cc
@@ -565,6 +565,7 @@ GpuChannel::GpuChannel(
     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,
@@ -583,10 +584,12 @@ GpuChannel::GpuChannel(
       share_group_(share_group),
       mailbox_manager_(mailbox_manager),
       watchdog_(watchdog),
+      discardable_manager_(std::move(discardable_manager)),
       is_gpu_host_(is_gpu_host),
       weak_factory_(this) {
   DCHECK(gpu_channel_manager);
   DCHECK(client_id);
+  CHECK(discardable_manager_);
 
   message_queue_ = new GpuChannelMessageQueue(this, task_runner, io_task_runner,
                                               preempting_flag, preempted_flag,