[BlobAsync] Faster shortcuttin, make renderer controller leaky & alive.

content/browser/renderer_host/render_process_host_impl.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 407 matching lines @@
   int instance_id_ = 1;
 
   BrowserContext* browser_context_;
 
   // Owned by |browser_context_|.
   StoragePartitionImpl* storage_partition_impl_;
 
   // The observers watching our lifetime.
   base::ObserverList<RenderProcessHostObserver> observers_;
 
-  // True if the process can be shut down suddenly.  If this is true, then we're
+  // Refcount of dependencies that need sudden termination disabled. If <= 0,
+  // the process can be shut down suddenly.  If this is <= 0, then we're
   // sure that all the RenderViews in the process can be shutdown suddenly.  If
-  // it's false, then specific RenderViews might still be allowed to be shutdown
+  // it's > 0, then specific RenderViews might still be allowed to be shutdown
   // suddenly by checking their SuddenTerminationAllowed() flag.  This can occur
   // if one WebContents has an unload event listener but another WebContents in
   // the same process doesn't.
-  bool sudden_termination_allowed_;
+  int sudden_termination_blocking_refcount_;
 
   // Set to true if we shouldn't send input events.  We actually do the
   // filtering for this at the render widget level.
   bool ignore_input_events_;
 
   // Records the last time we regarded the child process active.
   base::TimeTicks child_process_activity_time_;
 
   // Indicates whether this RenderProcessHost is exclusively hosting guest
   // RenderFrames.
@@ skipping 80 matching lines @@
   mojo::ScopedMessagePipeHandle in_process_renderer_handle_;
 
   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_