Add data reduction functionality to all platforms.

chrome/browser/io_thread.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 CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 289 matching lines @@
   net::SSLConfigService* GetSSLConfigService();
 
   void ChangedToOnTheRecordOnIOThread();
 
   void UpdateDnsClientEnabled();
 
   // Configures QUIC options based on the flags in |command_line| as
   // well as the QUIC field trial group.
   void ConfigureQuic(const base::CommandLine& command_line);
 
+  // Set up data reduction proxy related objects on |IOThread::Globals|
+  void SetupDataReductionProxy(ChromeNetworkDelegate* network_delegate);

[Ryan Sleevi, 2014/07/22 01:56:30]

The Data Reduction Proxy is inherently privacy sensitive. I'm dismayed by the
fact that Incognito is being routed through it. This absolutely should not be
part of the IOThread Globals.

[Not at Google. Contact bengr, 2014/07/22 23:03:53]

We do not proxy incognito. We are making a change to make
DataReductionProxySettings a browser context keyed service that will not be
available for incognito. This will go away then. I can hold off on this cl until
that is done if you prefer.

+
   extensions::EventRouterForwarder* extension_event_router_forwarder() {
 #if defined(ENABLE_EXTENSIONS)
     return extension_event_router_forwarder_;
 #else
     return NULL;
 #endif
   }
   // Configures QUIC options in |globals| based on the flags in |command_line|
   // as well as the QUIC field trial group and parameters.
   static void ConfigureQuicGlobals(
@@ skipping 119 matching lines @@
   bool is_spdy_disabled_by_policy_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   const base::TimeTicks creation_time_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_