mac rtl: pin profile switcher to left edge in rtl

chrome/browser/ui/cocoa/l10n_util.h

Index: chrome/browser/ui/cocoa/l10n_util.h
diff --git a/chrome/browser/ui/cocoa/l10n_util.h b/chrome/browser/ui/cocoa/l10n_util.h
index 3eb5fe186fa60f8161f45b3c2c724dbd0ef91ee6..8274916746ba23bea8e0c10241f47309390e319c 100644
--- a/chrome/browser/ui/cocoa/l10n_util.h
+++ b/chrome/browser/ui/cocoa/l10n_util.h
@@ -33,8 +33,12 @@ NSString* ReplaceNSStringPlaceholders(NSString* formatString,
 // Generates a tooltip string for a given URL and title.
 NSString* TooltipForURLAndTitle(NSString* url, NSString* title);
 
-// Returns whether experimental Mac RTL support is enabled via
-// --enable-features=ExperimentalMacRTL.
+// Returns whether both:
+// 1) Experimental Mac RTL support is enabled via the ExperimentalMacRTL
+//    feature;
+// 2) The browser UI is in RTL mode.

[Mark Mentovai, 2016/09/15 13:46:11]

The name of the function doesn’t indicate that it does this, so when you read
the code at the call sites, it looks like this aspect is unchecked. IS there a
better name that you can use for the function?

[Elly Fong-Jones, 2016/09/16 12:56:45]

Renamed it to ShouldDoExperimentalRTLLayout.

+// If ExperimentalMacRTL becomes the default, this function can be replaced with
+// uses of base::i18n::IsRTL().
 bool ExperimentalMacRTLIsEnabled();
 
 }  // namespace cocoa_l10n_util