Address post-commit comments from codereview.chromium.org/371059 and codereview.chromium.org/293019

chrome/browser/cocoa/bookmark_bar_view.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/cocoa/bookmark_bar_view.h"
 
 #import "chrome/browser/cocoa/bookmark_bar_controller.h"
 #import "third_party/GTM/AppKit/GTMTheme.h"
 #import "third_party/mozilla/include/NSPasteboard+Utils.h"
 
@@ skipping 22 matching lines @@
   NSArray* types = [NSArray arrayWithObjects:NSStringPboardType,
       NSHTMLPboardType, NSURLPboardType, nil];
   [self registerForDraggedTypes:types];
 }
 
 - (void)viewDidMoveToWindow {
   if ([self window])
     [self updateTheme:[self gtm_theme]];
 }
 
+// Called after the current theme has changed.
 - (void)themeDidChangeNotification:(NSNotification*)aNotification {
   GTMTheme* theme = [aNotification object];
   [self updateTheme:theme];
 }
 
+// Adapt appearance to the current theme. Called after theme changes and before
+// this is shown for the first time.
 - (void)updateTheme:(GTMTheme*)theme {
   NSColor* color = [theme textColorForStyle:GTMThemeStyleBookmarksBarButton
                                       state:GTMThemeStateActiveWindow];
   [noItemTextfield_ setTextColor:color];
 }
 
 // Mouse down events on the bookmark bar should not allow dragging the parent
 // window around.
 - (BOOL)mouseDownCanMoveWindow {
   return NO;
@@ skipping 35 matching lines @@
   NSArray* urls = nil;
   NSArray* titles = nil;
   [pboard getURLs:&urls andTitles:&titles];
 
   return [controller_ addURLs:urls
                    withTitles:titles
                            at:[info draggingLocation]];
 }
 
 @end  // @implementation BookmarkBarView