Lower the priority of shared workers

content/browser/worker_host/worker_process_host.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_WORKER_HOST_WORKER_PROCESS_HOST_H_
 #define CONTENT_BROWSER_WORKER_HOST_WORKER_PROCESS_HOST_H_
 
 #include <list>
 #include <string>
 #include <utility>
@@ skipping 140 matching lines @@
   void FilterShutdown(WorkerMessageFilter* filter);
 
   // Shuts down any shared workers that are no longer referenced by active
   // documents.
   void DocumentDetached(WorkerMessageFilter* filter,
                         unsigned long long document_id);
 
   // Terminates the given worker, i.e. based on a UI action.
   CONTENT_EXPORT void TerminateWorker(int worker_route_id);
 
+  // Callers can reduce the WorkerProcess' priority.
+  void SetBackgrounded(bool backgrounded);
+
   CONTENT_EXPORT const ChildProcessData& GetData();
 
   typedef std::list<WorkerInstance> Instances;
   const Instances& instances() const { return instances_; }
 
   ResourceContext* resource_context() const {
     return resource_context_;
   }
 
+  bool IsProcessLaunched() const;

[jam, 2013/05/09 18:02:57]

nit: this is really just a getter, so give it a unix_hacker name and inline it
(like the above getters)

[shatch, 2013/05/09 22:42:49]

Done.

+
  protected:
   friend class WorkerServiceImpl;
 
   Instances& mutable_instances() { return instances_; }
 
  private:
   // BrowserChildProcessHostDelegate implementation:
   virtual void OnProcessLaunched() OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
@@ skipping 34 matching lines @@
 
   ResourceContext* const resource_context_;
   WorkerStoragePartition partition_;
 
   // A reference to the filter associated with this worker process.  We need to
   // keep this around since we'll use it when forward messages to the worker
   // process.
   scoped_refptr<WorkerMessageFilter> worker_message_filter_;
 
   scoped_ptr<BrowserChildProcessHostImpl> process_;
+  bool process_launched_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkerProcessHost);
 };
 
 class WorkerProcessHostIterator
     : public BrowserChildProcessHostTypeIterator<WorkerProcessHost> {
  public:
   WorkerProcessHostIterator()
       : BrowserChildProcessHostTypeIterator<WorkerProcessHost>(
             PROCESS_TYPE_WORKER) {
   }
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WORKER_HOST_WORKER_PROCESS_HOST_H_