[Mac] Move the large block of NSEvent forward declarations to a shared header.

ui/message_center/cocoa/popup_controller.mm

 // Copyright (c) 2013 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 "ui/message_center/cocoa/popup_controller.h"
 
 #include <cmath>
 
 #import "base/mac/foundation_util.h"
+#import "base/mac/sdk_forward_declarations.h"
 #import "ui/base/cocoa/window_size_constants.h"
 #import "ui/message_center/cocoa/notification_controller.h"
 #import "ui/message_center/cocoa/popup_collection.h"
 #include "ui/message_center/message_center.h"
 
 #if !defined(MAC_OS_X_VERSION_10_7) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
 enum {
   NSWindowCollectionBehaviorFullScreenAuxiliary = 1 << 8
 };
-
-enum {
-  NSEventPhaseNone        = 0, // event not associated with a phase.
-  NSEventPhaseBegan       = 0x1 << 0,
-  NSEventPhaseStationary  = 0x1 << 1,
-  NSEventPhaseChanged     = 0x1 << 2,
-  NSEventPhaseEnded       = 0x1 << 3,
-  NSEventPhaseCancelled   = 0x1 << 4,
-};
-typedef NSUInteger NSEventPhase;
-
-enum {
-  NSEventSwipeTrackingLockDirection = 0x1 << 0,
-  NSEventSwipeTrackingClampGestureAmount = 0x1 << 1
-};
-typedef NSUInteger NSEventSwipeTrackingOptions;
-
-@interface NSEvent (LionAPI)
-- (NSEventPhase)phase;
-- (CGFloat)scrollingDeltaX;
-- (CGFloat)scrollingDeltaY;
-- (void)trackSwipeEventWithOptions:(NSEventSwipeTrackingOptions)options
-          dampenAmountThresholdMin:(CGFloat)minDampenThreshold
-                               max:(CGFloat)maxDampenThreshold
-                      usingHandler:(void (^)(CGFloat gestureAmount,
-                                             NSEventPhase phase,
-                                             BOOL isComplete,
-                                             BOOL* stop))trackingHandler;
-@end
 #endif  // MAC_OS_X_VERSION_10_7
 
 ////////////////////////////////////////////////////////////////////////////////
 
 @interface MCPopupController (Private)
 - (void)notificationSwipeStarted;
 - (void)notificationSwipeMoved:(CGFloat)amount;
 - (void)notificationSwipeEnded:(BOOL)ended complete:(BOOL)isComplete;
 @end
 
@@ skipping 188 matching lines @@
     NSViewAnimationEndFrameKey: [NSValue valueWithRect:newBounds]
   };
   boundsAnimation_.reset([[NSViewAnimation alloc]
       initWithViewAnimations:[NSArray arrayWithObject:animationDict]]);
   [boundsAnimation_ setDuration:[popupCollection_ popupAnimationDuration]];
   [boundsAnimation_ setDelegate:self];
   [boundsAnimation_ startAnimation];
 }
 
 @end