CommandBufferProxyImpl holds on to GpuMemoryBuffers while they are in use.

gpu/ipc/client/command_buffer_proxy_impl.cc

Index: gpu/ipc/client/command_buffer_proxy_impl.cc
diff --git a/gpu/ipc/client/command_buffer_proxy_impl.cc b/gpu/ipc/client/command_buffer_proxy_impl.cc
index 447697d0f9d1e12998bbd8279443b23967474230..a04ae4c66df4c1e97e45a19f255adb664ee17b74 100644
--- a/gpu/ipc/client/command_buffer_proxy_impl.cc
+++ b/gpu/ipc/client/command_buffer_proxy_impl.cc
@@ -518,6 +518,9 @@ void CommandBufferProxyImpl::DestroyImage(int32_t id) {
   auto it = image_gmb_ids_map_.find(id);
   if (it != image_gmb_ids_map_.end())
     image_gmb_ids_map_.erase(it);
+  auto it2 = image_gmb_map_.find(id);
+  if (it2 != image_gmb_map_.end())
+    image_gmb_map_.erase(it2);
   Send(new GpuCommandBufferMsg_DestroyImage(route_id_, id));
 }
 
@@ -535,7 +538,11 @@ int32_t CommandBufferProxyImpl::CreateGpuMemoryBufferImage(
   if (!buffer)
     return -1;
 
-  return CreateImage(buffer->AsClientBuffer(), width, height, internal_format);
+  int32_t result =
+      CreateImage(buffer->AsClientBuffer(), width, height, internal_format);
+  if (result != -1)
+    image_gmb_map_[result] = std::move(buffer);
+  return result;
 }
 
 int32_t CommandBufferProxyImpl::GetImageGpuMemoryBufferId(unsigned image_id) {