Initial patch set to implement improved touch support for screen magnification

chromeos/chromeos_switches.cc

 // 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.
 
 #include "chromeos/chromeos_switches.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 250 matching lines @@
 
 // Enables the touch calibration option in MD settings UI for valid touch
 // displays.
 const char kEnableTouchCalibrationSetting[] =
     "enable-touch-calibration-setting";
 
 // Enables touchpad three-finger-click as middle button.
 const char kEnableTouchpadThreeFingerClick[] =
     "enable-touchpad-three-finger-click";
 
+// Enables touch support for screen magnification.
+const char kEnableTouchSupportForScreenMagnification[] =
+    "enable-touch-support-for-screen-magnification";
+
 // Enables the chromecast support for video player app.
 const char kEnableVideoPlayerChromecastSupport[] =
     "enable-video-player-chromecast-support";
 
 // Disables ARC for managed accounts.
 const char kEnterpriseDisableArc[] = "enterprise-disable-arc";
 
 // Whether to enable forced enterprise re-enrollment.
 const char kEnterpriseEnableForcedReEnrollment[] =
     "enterprise-enable-forced-re-enrollment";
@@ skipping 195 matching lines @@
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (!command_line->HasSwitch(kTestCrosGaiaIdMigration))
     return false;
 
   return command_line->GetSwitchValueASCII(kTestCrosGaiaIdMigration) ==
          kTestCrosGaiaIdMigrationStarted;
 }
 
 }  // namespace switches
 }  // namespace chromeos