Pending tasks in a message loop should be deleted before shutting down Blink

content/common/gpu/client/gpu_channel_host.cc

Index: content/common/gpu/client/gpu_channel_host.cc
diff --git a/content/common/gpu/client/gpu_channel_host.cc b/content/common/gpu/client/gpu_channel_host.cc
index d0ceecd26211e2c255ad48504a0c40dd459782a7..bb38b22462c17ddc83b43da3619d47ba46a1b27d 100644
--- a/content/common/gpu/client/gpu_channel_host.cc
+++ b/content/common/gpu/client/gpu_channel_host.cc
@@ -247,6 +247,13 @@ void GpuChannelHost::DestroyCommandBuffer(
   delete command_buffer;
 }
 
+void GpuChannelHost::DestroyChannel() {
+  // channel_ must be destroyed on the main thread.
+  if (channel_.get() && !factory_->IsMainThread())
+    factory_->GetMainLoop()->DeleteSoon(FROM_HERE, channel_.release());
+  channel_.reset();
+}
+
 void GpuChannelHost::AddRoute(
     int route_id, base::WeakPtr<IPC::Listener> listener) {
   DCHECK(MessageLoopProxy::current().get());
@@ -335,12 +342,9 @@ int32 GpuChannelHost::GenerateRouteID() {
 }
 
 GpuChannelHost::~GpuChannelHost() {
-  // channel_ must be destroyed on the main thread.
-  if (!factory_->IsMainThread())
-    factory_->GetMainLoop()->DeleteSoon(FROM_HERE, channel_.release());
+  DestroyChannel();
 }
 
-
 GpuChannelHost::MessageFilter::MessageFilter()
     : lost_(false) {
 }