Add a switch for tablet power button behavior

ash/common/ash_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 "ash/common/ash_switches.h"
 
 #include "base/command_line.h"
 #include "base/sys_info.h"
 
 namespace ash {
@@ skipping 43 matching lines @@
 const char kAshEnableMagnifierKeyScroller[] =
     "ash-enable-magnifier-key-scroller";
 
 // Enables the palette next to the status area.
 const char kAshEnablePalette[] = "ash-enable-palette";
 
 // Enables the palette on every display, instead of only the internal one.
 const char kAshEnablePaletteOnAllDisplays[] =
     "ash-enable-palette-on-all-displays";
 
+// Enables tablet power button behavior for convertible/tablet devices.
+// TODO(warx): Enable or remove this switch once crbug.com/633304 is fully
+// finished.
+const char kAshEnableTabletPowerButton[] = "enable-tablet-power-button";

[Daniel Erat, 2016/11/15 15:10:42]

this should probably be ash-enable-tablet-power-button to match most other ash
switches, right? (i don't know why enable-touchview doesn't have the same
prefix.)

[Qiang(Joe) Xu, 2016/11/15 17:29:09]

yes.. changed.
I didn't change enable-touchview in this CL (it needs to match the chromeos
platform code).

 #endif
 
 // Enables the observation of accelerometer events to enter touch-view mode.
 const char kAshEnableTouchView[] = "enable-touchview";
 
 // Enables mirrored screen.
 const char kAshEnableMirroredScreen[] = "ash-enable-mirrored-screen";
 
 // Enables touch view testing.
 // TODO(skuhne): Remove DEBUG_TOGGLE_TOUCH_VIEW accelerator once this flag is
@@ skipping 28 matching lines @@
 
   return base::SysInfo::IsRunningOnChromeOS() ||
          base::CommandLine::ForCurrentProcess()->HasSwitch(
              kAshConstrainPointerToRoot);
 }
 
 #endif
 
 }  // namespace switches
 }  // namespace ash