Added flag for alternate launcher settings (remaining changes to come).

ash/ash_switches.cc

Index: ash/ash_switches.cc
diff --git a/ash/ash_switches.cc b/ash/ash_switches.cc
index ab46df475b15ae03e376d25714905d856a5b1407..4ff6d253b02f606699e0fa012b209e857d00f52d 100644
--- a/ash/ash_switches.cc
+++ b/ash/ash_switches.cc
@@ -120,6 +120,10 @@ const char kAshSecondaryDisplayLayout[] = "ash-secondary-display-layout";
 // Enables the heads-up display for tracking touch points.
 const char kAshTouchHud[] = "ash-touch-hud";
 
+// Use alternate layout of the shelf for testing a new look and feel:
+// crbug's [244983, 244990, 244994, 245005, 245012]

[James Cook, 2013/06/13 15:55:30]

I would explain briefly the changes here, rather than referencing 5 different
bugs.  Just copy-paste the titles or something.  I usually only reference a
single bug, and only if it's a relatively complex issue.  (This avoids the
reader having to switch into their browser and look up the details of the
issue.)

[Harry McCleave, 2013/06/13 22:30:42]

Done.

+const char kAshUseAlternateShelfLayout[] = "ash-use-alt-shelf";

[James Cook, 2013/06/13 15:55:30]

Should this be ash-use-alternate-shelf to be more similar to the variable name? 
I hate abbreviations.

[Harry McCleave, 2013/06/13 22:30:42]

Done.

+
 // Uses the 1st display in --ash-host-window-bounds as internal display.
 // This is for debugging on linux desktop.
 const char kAshUseFirstDisplayAsInternal[] =
@@ -157,5 +161,10 @@ bool ShowAudioDeviceMenu() {
           HasSwitch(ash::switches::kAshEnableAudioDeviceMenu);
 }
 
+bool UseAlternateShelfLayout() {

[James Cook, 2013/06/13 15:55:30]

I like this pattern of a UseFoo() function.

+  return CommandLine::ForCurrentProcess()->
+        HasSwitch(ash::switches::kAshUseAlternateShelfLayout);
+}
+
 }  // namespace switches
 }  // namespace ash