Chrome OS: avoid suspending on lid close when casting is active.

ash/shell.h

Index: ash/shell.h
diff --git a/ash/shell.h b/ash/shell.h
index ff58e66372b4a004ad81c46deec72f43d585fe14..efa278e1a47367529cbfc69553243ae14b241a00 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -286,6 +286,9 @@ class ASH_EXPORT Shell
   // unlocked.
   void OnLockStateChanged(bool locked);
 
+  // Called when a casting session is started or stopped.

[Daniel Erat, 2014/01/17 19:13:51]

nit: it looks from the rest of the code like there can be multiple concurrent
casting sessions. i'm wondering if this could be made more clear through a
change to the function name -- the current OnCastingStateChanged() name made me
(as someone who doesn't know anything about casting) assume that there was just
a single global state. maybe a name like:

  void OnCastingSessionStartedOrStopped(bool started);

would be clearer. any opinions about this?

[hshi1, 2014/01/17 19:31:28]

Done.

+  void OnCastingStateChanged(bool started);
+
   // Initializes |shelf_|.  Does nothing if it's already initialized.
   void CreateShelf();