[ChromeDriver] Support mobile emulation on desktop Chrome.

chrome/test/chromedriver/capabilities.h

 // Copyright (c) 2013 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_TEST_CHROMEDRIVER_CAPABILITIES_H_
 #define CHROME_TEST_CHROMEDRIVER_CAPABILITIES_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
+#include "chrome/test/chromedriver/chrome/device_metrics.h"
 #include "chrome/test/chromedriver/chrome/log.h"
 #include "chrome/test/chromedriver/net/net_util.h"
 
 namespace base {
 class CommandLine;
 class DictionaryValue;
 }
 
 class Status;
 
@@ skipping 57 matching lines @@
   base::FilePath binary;
 
   // If provided, the remote debugging address to connect to.
   NetAddress debugger_address;
 
   // Whether the lifetime of the started Chrome browser process should be
   // bound to ChromeDriver's process. If true, Chrome will not quit if
   // ChromeDriver dies.
   bool detach;
 
+  // Device metrics for use in Device Emulation

[stgao, 2014/04/30 03:32:55]

style nit: A comment ends with a dot.

[sam.rawlins, 2014/05/06 23:51:46]

Done.

+  DeviceMetrics device_metrics;

[stgao, 2014/05/03 00:15:20]

I made a comment about this in the design doc. Please have a check.

+
   // Set of switches which should be removed from default list when launching
   // Chrome.
   std::set<std::string> exclude_switches;
 
   std::vector<std::string> extensions;
 
   // True if should always use DevTools for taking screenshots.
   // This is experimental and may be removed at a later point.
   bool force_devtools_screenshot;
 
   scoped_ptr<base::DictionaryValue> local_state;
 
   std::string log_path;
 
   LoggingPrefs logging_prefs;
 
   // If set, enable minidump for chrome crashes and save to this directory.
   std::string minidump_path;
 
   scoped_ptr<base::DictionaryValue> prefs;
 
   Switches switches;
 };
 
 #endif  // CHROME_TEST_CHROMEDRIVER_CAPABILITIES_H_