Adds ash::MaterialDesignController

ash/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/ash_switches.h"
 
 #include "base/command_line.h"
 #include "base/sys_info.h"
 
 namespace ash {
@@ skipping 40 matching lines @@
 const char kAshEnableMagnifierKeyScroller[] =
     "ash-enable-magnifier-key-scroller";
 
 // Enables unified desktop mode.
 const char kAshEnableUnifiedDesktop[] = "ash-enable-unified-desktop";
 
 // Enables the observation of accelerometer events to enter touch-view mode.
 const char kAshEnableTouchView[] = "enable-touchview";
 #endif
 
+// Enables / disables Material Design mode for the Chrome OS system UI.
+const char kAshEnableMaterialDesign[] = "ash-enable-md";
+const char kAshDisableMaterialDesign[] = "ash-disable-md";

[Alexei Svitkine (slow), 2016/04/26 15:12:39]

Have you considered using base/feature_list.h instead? It provides the same
ability to have an entry in about:flags as well as allows to later enable this
via a server-side experiment without any additional code.

[varkha, 2016/04/26 15:23:00]

Thanks, I will take a look, didn't know this was a thing. I don't see it ever
used in Chrome OS core UI, probably just lack of awareness.
oshima@, do you have a feel for this one way or the other? I've used a regular
flag mostly because this is how we did "top-chrome-md" flag.

+
 // Enables mirrored screen.
 const char kAshEnableMirroredScreen[] = "ash-enable-mirrored-screen";
 
 // Enables / disables a stable order between overview sessions, independent of
 // the MRU order which attempts to preserve relative window positions.
 const char kAshDisableStableOverviewOrder[] =
     "ash-disable-stable-overview-order";
 const char kAshEnableStableOverviewOrder[] = "ash-enable-stable-overview-order";
 
 // Enables software based mirroring.
@@ skipping 58 matching lines @@
 
   return base::SysInfo::IsRunningOnChromeOS() ||
          base::CommandLine::ForCurrentProcess()->HasSwitch(
              kAshConstrainPointerToRoot);
 }
 
 #endif
 
 }  // namespace switches
 }  // namespace ash