GL Implementation for GPU Discardable

gpu/ipc/service/gpu_channel_manager.cc

Index: gpu/ipc/service/gpu_channel_manager.cc
diff --git a/gpu/ipc/service/gpu_channel_manager.cc b/gpu/ipc/service/gpu_channel_manager.cc
index 14779657bae903d01b2e16b710eb82bc10e8dc53..8a9ea12561bb8ea3534086fa868fe1421dbf569e 100644
--- a/gpu/ipc/service/gpu_channel_manager.cc
+++ b/gpu/ipc/service/gpu_channel_manager.cc
@@ -66,6 +66,7 @@ GpuChannelManager::GpuChannelManager(
       sync_point_manager_(sync_point_manager),
       gpu_memory_buffer_factory_(gpu_memory_buffer_factory),
       gpu_feature_info_(gpu_feature_info),
+      discardable_manager_(new ServiceDiscardableManager()),
       exiting_for_lost_context_(false),
       activity_flags_(std::move(activity_flags)),
       weak_factory_(this) {
@@ -131,7 +132,7 @@ GpuChannel* GpuChannelManager::EstablishChannel(int client_id,
                                                 bool is_gpu_host) {
   std::unique_ptr<GpuChannel> gpu_channel = base::MakeUnique<GpuChannel>(
       this, sync_point_manager_, watchdog_, share_group_, mailbox_manager_,
-      is_gpu_host ? preemption_flag_ : nullptr,
+      discardable_manager_, is_gpu_host ? preemption_flag_ : nullptr,
       is_gpu_host ? nullptr : preemption_flag_, task_runner_, io_task_runner_,
       client_id, client_tracing_id, is_gpu_host);