[Mac] Organize all tab/tab strip files into chrome/browser/ui/cocoa/tabs/....

chrome/browser/ui/cocoa/framed_browser_window.mm

 // Copyright (c) 2010 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/ui/cocoa/framed_browser_window.h"
 
 #include "base/logging.h"
 #include "chrome/browser/global_keyboard_shortcuts_mac.h"
 #import "chrome/browser/ui/cocoa/browser_frame_view.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
-#import "chrome/browser/ui/cocoa/tab_strip_controller.h"
+#import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
 #import "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 #include "chrome/browser/themes/browser_theme_provider.h"
 
 namespace {
   // Size of the gradient. Empirically determined so that the gradient looks
   // like what the heuristic does when there are just a few tabs.
   const CGFloat kWindowGradientHeight = 24.0;
 }
 
@@ skipping 322 matching lines @@
   // return the original (unconstrained) frame.
   id delegate = [self delegate];
   if ([delegate respondsToSelector:@selector(shouldConstrainFrameRect)] &&
       ![delegate shouldConstrainFrameRect])
     return frame;
 
   return [super constrainFrameRect:frame toScreen:screen];
 }
 
 @end