[CrOS] Initial rough cut of alt-tab window cycling UI.

ash/common/ash_switches.h

Index: ash/common/ash_switches.h
diff --git a/ash/common/ash_switches.h b/ash/common/ash_switches.h
index d798e3e57584c81d02dde2cb8a5b66d78af19b8a..7b3090ed4cb0368e2269b0f8924b2d87679b0b17 100644
--- a/ash/common/ash_switches.h
+++ b/ash/common/ash_switches.h
@@ -38,6 +38,7 @@ ASH_EXPORT extern const char kAshEnableSoftwareMirroring[];
 ASH_EXPORT extern const char kAshDisableSystemSounds[];
 ASH_EXPORT extern const char kAshEnableSystemSounds[];
 ASH_EXPORT extern const char kAshEnableTouchViewTesting[];
+ASH_EXPORT extern const char kAshEnableWindowCycleUi[];

[Daniel Erat, 2016/07/06 22:04:47]

nit: highly unscientific, but "UI" looks like it's probably much more common
than "Ui" in class (and presumably also constant) names:

% git grep 'class .*UI.* {' | wc -l
720
% git grep 'class .*Ui.* {' | wc -l
33

[Evan Stade, 2016/07/06 23:02:59]

Yea, Chrome does it wrong in most places. The google style guide specifies this
should be Ui so I always use Ui (or Md, or Api, etc.) in new code.

[Daniel Erat, 2016/07/06 23:47:30]

fair enough. i actually checked the chromium style guide today but got a cached
version (looked like
http://web.archive.org/web/20160601170106/https://www.chromium.org/developers...),
which has some example functions with names like "OK3ReallyLongFunctionName",
which made me think that we don't lowercase the trailing letters in
abbreviations. (the google c++ guide still has an "IsOK" example at
https://google.github.io/styleguide/cppguide.html#Function_Declarations_and_D...,
but that one's probably hard to change in the underlying code.)

[Evan Stade, 2016/07/07 15:24:42]

I guess that might be a bug in the guide? The part I was referring to says
"(i.e. StartRpc(), not StartRPC())."

 ASH_EXPORT extern const char kAshHideNotificationsForFactory[];
 ASH_EXPORT extern const char kAshHostWindowBounds[];
 ASH_EXPORT extern const char kAshMaterialDesign[];