Don't show favicons or throbbers for the New Tab page on the Mac....

chrome/browser/cocoa/tab_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_COCOA_TAB_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_TAB_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 // The loading/waiting state of the tab.
@@ skipping 22 matching lines @@
 // progress. The default in the nib is an image view so nothing special is
 // required if that's all you need.
 
 @interface TabController : NSViewController {
  @private
   IBOutlet NSView* iconView_;
   IBOutlet NSTextField* titleView_;
   IBOutlet NSMenu* contextMenu_;
   IBOutlet NSButton* closeButton_;
 
+  NSRect originalIconFrame_;  // frame of iconView_ as loaded from nib
+  BOOL isIconShowing_;  // last state of iconView_ in updateVisibility
   BOOL selected_;
   TabLoadingState loadingState_;
+  float iconTitleXOffset_;  // between left edges of icon and title
+  float titleCloseWidthOffset_;  // between right edges of icon and close button
   id<TabControllerTarget> target_;  // weak, where actions are sent
   SEL action_;  // selector sent when tab is selected by clicking
 }
 
 @property(assign, nonatomic) TabLoadingState loadingState;
 
 @property(assign, nonatomic) BOOL selected;
 @property(assign, nonatomic) id target;
 @property(assign, nonatomic) SEL action;
 
 // Minimum and maximum allowable tab width. The minimum width does not show
-// the icon or the close box. The selected tab always has at least a close box
-// so it has a different minimum width.
+// the icon or the close button. The selected tab always has at least a close
+// button so it has a different minimum width.
 + (float)minTabWidth;
 + (float)maxTabWidth;
 + (float)minSelectedTabWidth;
 
 // The view associated with this controller, pre-casted as a TabView
 - (TabView *)tabView;
 
 // Closes the associated TabView by relaying the message to |target_| to
 // perform the close.
 - (IBAction)closeTab:(id)sender;
@@ skipping 13 matching lines @@
 // In this mode, we handle clicks slightly differently due to animation.
 // Ideally, tabs would know about their own animation and wouldn't need this.
 - (BOOL)inRapidClosureMode;
 
 @end
 
 @interface TabController(TestingAPI)
 - (NSString *)toolTip;
 - (int)iconCapacity;
 - (BOOL)shouldShowIcon;
-- (BOOL)shouldShowCloseBox;
+- (BOOL)shouldShowCloseButton;
 @end  // TabController(TestingAPI)
 
 #endif  // CHROME_BROWSER_COCOA_TAB_CONTROLLER_H_