Getting rid of GetDefaultProfile & fixing multi user issues with accessibility

ash/accessibility_delegate.h

Index: ash/accessibility_delegate.h
diff --git a/ash/accessibility_delegate.h b/ash/accessibility_delegate.h
index 0d47c3837916b95cd367580b267b4caa0c16373c..5e885ef64c0567b0cc877c9ed806f1cc92146c57 100644
--- a/ash/accessibility_delegate.h
+++ b/ash/accessibility_delegate.h
@@ -63,9 +63,8 @@ class ASH_EXPORT AccessibilityDelegate {
   // Returns if autoclick is enabled or not.
   virtual bool IsAutoclickEnabled() const = 0;
 
-  // Returns true if the user wants to show accesibility menu even when all the
-  // accessibility features are disabled.
-  virtual bool ShouldAlwaysShowAccessibilityMenu() const = 0;
+  // Returns true if the user wants to show accessibility menu.

[dmazzoni, 2013/12/13 16:15:07]

I think it's misleading to say "if the user wants..."

Previously this function only returned true if the user had chosen to always
show the accessibility menu by a preference. It looks like now you're using this
function to compute if it should be shown for other reason.

So I'd comment "Returns true if the accessibility menu should be shown, which
may be because of an explicit user preference or because one of the logged-in
users has an accessibility setting on."

[Mr4D (OOO till 08-26), 2013/12/13 17:21:13]

Done.

+  virtual bool ShouldShowAccessibilityMenu() const = 0;
 
   // Cancel all current and queued speech immediately.
   virtual void SilenceSpokenFeedback() const = 0;