gpu: Replace GpuMsg_Finalize ipc with equivalent mojom api

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
index 5bd58166d21c06128803323d55d75381bfd7dfc4..4d8ac441d44f7fffbee140a7d06e1b2cb97feaa3 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.cc
+++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
@@ -276,6 +276,8 @@ void OnVideoMemoryUsageStats(const gpu::VideoMemoryUsageStats& stats) {
 }
 
 void RequestVideoMemoryUsageStats(GpuProcessHost* host) {
+  if (!host)
+    return;
   host->gpu_service()->GetVideoMemoryUsageStats(
       base::Bind(&OnVideoMemoryUsageStats));
 }