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

chrome/browser/ui/cocoa/side_tab_strip_controller.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/side_tab_strip_controller.h"
-
-@implementation SideTabStripController
-
-// TODO(pinkerton): Still need to figure out several things:
-//   - new tab button placement and layout
-//   - animating tabs in and out
-//   - being able to drop a tab elsewhere besides the 1st position
-//   - how to load a different tab view nib for each tab.
-
-- (id)initWithView:(TabStripView*)view
-        switchView:(NSView*)switchView
-           browser:(Browser*)browser
-          delegate:(id<TabStripControllerDelegate>)delegate {
-  self = [super initWithView:view
-                  switchView:switchView
-                     browser:browser
-                    delegate:delegate];
-  if (self) {
-    // Side tabs have no indent since they are not sharing space with the
-    // window controls.
-    [self setIndentForControls:0.0];
-    verticalLayout_ = YES;
-  }
-  return self;
-}
-
-@end
-