[Mac] Organize some files into chrome/browser/ui/cocoa/tab_contents/....

chrome/browser/ui/cocoa/sad_tab_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.
-
-#include "chrome/browser/ui/cocoa/sad_tab_controller.h"
-
-#include "base/mac/mac_util.h"
-#import "chrome/browser/ui/cocoa/sad_tab_view.h"
-
-@implementation SadTabController
-
-- (id)initWithTabContents:(TabContents*)someTabContents
-                superview:(NSView*)superview {
-  if ((self = [super initWithNibName:@"SadTab"
-                              bundle:base::mac::MainAppBundle()])) {
-    tabContents_ = someTabContents;
-
-    NSView* view = [self view];
-    [superview addSubview:view];
-    [view setFrame:[superview bounds]];
-  }
-
-  return self;
-}
-
-- (void)awakeFromNib {
-  // If tab_contents_ is nil, ask view to remove link.
-  if (!tabContents_) {
-    SadTabView* sad_view = static_cast<SadTabView*>([self view]);
-    [sad_view removeLinkButton];
-  }
-}
-
-- (void)dealloc {
-  [[self view] removeFromSuperview];
-  [super dealloc];
-}
-
-- (TabContents*)tabContents {
-  return tabContents_;
-}
-
-- (void)openLearnMoreAboutCrashLink:(id)sender {
-  // Send the action up through the responder chain.
-  [NSApp sendAction:@selector(openLearnMoreAboutCrashLink:) to:nil from:self];
-}
-
-@end