gpu: Replace GpuMsg_Finalize ipc with equivalent mojom api

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 70e6190615be032dd8c3fe1bfaa1f05246757b89..fec69f189658486857881c28c8f051bd7630e7a3 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -246,7 +246,6 @@ bool GpuChildThread::Send(IPC::Message* msg) {
 bool GpuChildThread::OnControlMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuChildThread, msg)
-    IPC_MESSAGE_HANDLER(GpuMsg_Finalize, OnFinalize)
     IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo, OnCollectGraphicsInfo)
     IPC_MESSAGE_HANDLER(GpuMsg_GpuSwitched, OnGpuSwitched)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -347,11 +346,6 @@ void GpuChildThread::CreateDisplayCompositor(
   NOTREACHED();
 }
 
-void GpuChildThread::OnFinalize() {
-  // Quit the GPU process
-  base::MessageLoop::current()->QuitWhenIdle();
-}
-
 void GpuChildThread::OnCollectGraphicsInfo() {
   if (dead_on_arrival_)
     return;