[GRC] Correctly Invalidate RenderProcessHost's CU Interface

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1760 matching lines @@
   Send(new ChildProcessMsg_Resume());
 }
 
 mojom::Renderer* RenderProcessHostImpl::GetRendererInterface() {
   return renderer_interface_.get();
 }
 
 resource_coordinator::ResourceCoordinatorInterface*
 RenderProcessHostImpl::GetProcessResourceCoordinator() {
   if (!process_resource_coordinator_) {
+    base::ProcessHandle process_handle = GetHandle();
+    DCHECK(process_handle);
+
     process_resource_coordinator_ =
         base::MakeUnique<resource_coordinator::ResourceCoordinatorInterface>(
             ServiceManagerConnection::GetForProcess()->GetConnector(),
             resource_coordinator::CoordinationUnitType::kProcess,
-            base::Process(GetHandle()).Pid());
+            base::Process(process_handle).Pid());
   }
   return process_resource_coordinator_.get();
 }
 
 void RenderProcessHostImpl::SetIsNeverSuitableForReuse() {
   is_never_suitable_for_reuse_ = true;
 }
 
 bool RenderProcessHostImpl::MayReuseHost() {
   if (is_never_suitable_for_reuse_)
@@ skipping 1398 matching lines @@
     }
   }
 
   RendererClosedDetails details(status, exit_code);
 
   child_process_launcher_.reset();
   is_dead_ = true;
   if (route_provider_binding_.is_bound())
     route_provider_binding_.Close();
   associated_interfaces_.reset();
+  process_resource_coordinator_.reset();
   ResetChannelProxy();
 
   UpdateProcessPriority();
 
   within_process_died_observer_ = true;
   NotificationService::current()->Notify(
       NOTIFICATION_RENDERER_PROCESS_CLOSED, Source<RenderProcessHost>(this),
       Details<RendererClosedDetails>(&details));
   for (auto& observer : observers_)
     observer.RenderProcessExited(this, status, exit_code);
@@ skipping 407 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing.
   // Capture the error message in a crash key value.
   base::debug::ScopedCrashKey error_key_value("mojo-message-error", error);
   bad_message::ReceivedBadMessage(render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content