CoreAnimation: Fix text anti-aliasing in download shelf

chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm
index cc3f93be1ee3ae65027cbfdde44a968b3bf2eb4a..042d1a288e4a1e7ecdc260888818ad43a17fafaa 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_button.mm
@@ -405,14 +405,14 @@ BookmarkButton* gDraggedButton = nil; // Weak
 }
 
 - (BOOL)isOpaque {
-  // Make this control opaque so that sub pixel anti aliasing works when core
-  // animation is enabled.
+  // Make this control opaque so that sub-pixel anti-aliasing works when
+  // CoreAnimation is enabled.
   return YES;
 }
 
 - (void)drawRect:(NSRect)rect {
-  NSView* toolbarView = [[self superview] superview];
-  [self cr_drawUsingAncestor:toolbarView inRect:(NSRect)rect];
+  NSView* bookmarkBarToolbarView = [[self superview] superview];
+  [self cr_drawUsingAncestor:bookmarkBarToolbarView inRect:(NSRect)rect];
   [super drawRect:rect];
 }