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

chrome/browser/cocoa/download_item_controller.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/download_item_controller.h"
 
 #include "app/gfx/text_elider.h"
 #include "app/l10n_util_mac.h"
 #include "app/resource_bundle.h"
 #include "base/mac_util.h"
@@ skipping 220 matching lines @@
     [progressView_ setHidden:NO];
     [dangerousDownloadView_ setHidden:YES];
   } else {
     DCHECK_EQ(kDangerous, state_);
     [progressView_ setHidden:YES];
     [dangerousDownloadView_ setHidden:NO];
   }
   [shelf_ layoutItems];
 }
 
+// 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:GTMThemeStyleTabBarSelected
                                       state:GTMThemeStateActiveWindow];
   [dangerousDownloadLabel_ setTextColor:color];
 }
 
 - (IBAction)saveDownload:(id)sender {
   // The user has confirmed a dangerous download.  We record how quickly the
   // user did this to detect whether we're being clickjacked.
   UMA_HISTOGRAM_LONG_TIMES("clickjacking.save_download",
@@ skipping 54 matching lines @@
 
 - (IBAction)handleReveal:(id)sender {
   menuBridge_->ExecuteItemCommand(DownloadShelfContextMenuMac::SHOW_IN_FOLDER);
 }
 
 - (IBAction)handleCancel:(id)sender {
   menuBridge_->ExecuteItemCommand(DownloadShelfContextMenuMac::CANCEL);
 }
 
 @end