Componentize component_updater: Decouple in-process DeltaUpdateOp from out-of-process version.

chrome/browser/component_updater/component_updater_configurator.h

 // Copyright (c) 2011 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 CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_CONFIGURATOR_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_CONFIGURATOR_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 
 class GURL;
 
 namespace base {
 class CommandLine;
 class SingleThreadTaskRunner;
 class SequencedTaskRunner;
 class Version;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace component_updater {
 
+class OutOfProcessPatcher;
+
 // Controls the component updater behavior.
 class Configurator {
  public:
   virtual ~Configurator() {}
 
   // Delay in seconds from calling Start() to the first update check.
   virtual int InitialDelay() const = 0;
 
   // Delay in seconds to every subsequent update check. 0 means don't check.
   // This function is a mutator for testing purposes.
@@ skipping 40 matching lines @@
   // The return string must be safe for insertion as an attribute in an
   // XML element.
   virtual std::string ExtraRequestParams() const = 0;
 
   // How big each update request can be. Don't go above 2000.
   virtual size_t UrlSizeLimit() const = 0;
 
   // The source of contexts for all the url requests.
   virtual net::URLRequestContextGetter* RequestContext() const = 0;
 
-  // True means that all ops are performed in this process.
-  virtual bool InProcess() const = 0;
+  // Returns a new out of process patcher. May be NULL for implementations
+  // that patch in-process.
+  virtual scoped_refptr<OutOfProcessPatcher> CreateOutOfProcessPatcher()
+      const = 0;
 
   // True means that this client can handle delta updates.
   virtual bool DeltasEnabled() const = 0;
 
   // True means that the background downloader can be used for downloading
   // non on-demand components.
   virtual bool UseBackgroundDownloader() const = 0;
 
   // Gets a task runner to a blocking pool of threads suitable for worker jobs.
   virtual scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
       const = 0;
 
   // Gets a task runner for worker jobs guaranteed to run on a single thread.
   // This thread must be capable of IO. On Windows, this thread must be
   // initialized for use of COM objects.
   virtual scoped_refptr<base::SingleThreadTaskRunner>
       GetSingleThreadTaskRunner() const = 0;
 };
 
 Configurator* MakeChromeComponentUpdaterConfigurator(
     const base::CommandLine* cmdline,
     net::URLRequestContextGetter* context_getter);
 
 }  // namespace component_updater
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_CONFIGURATOR_H_