[mac] Implement a windowed extension install/permissions prompt.

chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm

 // Copyright (c) 2012 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/tabs/tab_strip_drag_controller.h"
 
 #import "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
+#import "base/mac/sdk_forward_declarations.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_controller.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_controller_target.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_view.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_window_controller.h"
 
-// Replicate specific 10.7 SDK declarations for building with prior SDKs.
-#if !defined(MAC_OS_X_VERSION_10_7) || \
-MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
-
-enum {
-  NSWindowAnimationBehaviorDefault = 0,
-  NSWindowAnimationBehaviorNone = 2,
-  NSWindowAnimationBehaviorDocumentWindow = 3,
-  NSWindowAnimationBehaviorUtilityWindow = 4,
-  NSWindowAnimationBehaviorAlertPanel = 5
-};
-typedef NSInteger NSWindowAnimationBehavior;
-
-@interface NSWindow (LionSDKDeclarations)
-- (NSWindowAnimationBehavior)animationBehavior;
-- (void)setAnimationBehavior:(NSWindowAnimationBehavior)newAnimationBehavior;
-@end
-
-#endif  // MAC_OS_X_VERSION_10_7
-
 const CGFloat kTearDistance = 36.0;
 const NSTimeInterval kTearDuration = 0.333;
 
 @interface TabStripDragController (Private)
 - (void)resetDragControllers;
 - (NSArray*)dropTargetsForController:(TabWindowController*)dragController;
 - (void)setWindowBackgroundVisibility:(BOOL)shouldBeVisible;
 - (void)endDrag:(NSEvent*)event;
 - (void)continueDrag:(NSEvent*)event;
 @end
@@ skipping 444 matching lines @@
     [[targetController_ window] makeMainWindow];
   } else {
     [dragWindow_ setAlphaValue:0.5];
     [[draggedController_ overlayWindow] setHasShadow:NO];
     [[draggedController_ window] makeMainWindow];
   }
   chromeIsVisible_ = shouldBeVisible;
 }
 
 @end