Consolidate SDK forwards in sdk_forward_declarations.h.

content/common/cursors/webcursor_mac.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.
 
 #include "content/common/cursors/webcursor.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
+#include "base/mac/sdk_forward_declarations.h"
 #include "content/public/common/content_client.h"
 #include "grit/webkit_resources.h"
 #include "skia/ext/skia_utils_mac.h"
 #include "third_party/WebKit/public/platform/WebCursorInfo.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/point_conversions.h"
 #include "ui/gfx/size_conversions.h"
 
 
 using blink::WebCursorInfo;
 using blink::WebSize;
 
-// Declare symbols that are part of the 10.7 SDK.
-#if !defined(MAC_OS_X_VERSION_10_7) || \
-    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
-
-@interface NSCursor (LionSDKDeclarations)
-+ (NSCursor*)IBeamCursorForVerticalLayout;
-@end
-
-#endif  // MAC_OS_X_VERSION_10_7
-
 // Private interface to CoreCursor, as of Mac OS X 10.7. This is essentially the
 // implementation of WKCursor in WebKitSystemInterface.
 
 enum {
   kArrowCursor = 0,
   kIBeamCursor = 1,
   kMakeAliasCursor = 2,
   kOperationNotAllowedCursor = 3,
   kBusyButClickableCursor = 4,
   kCopyCursor = 5,
@@ skipping 346 matching lines @@
 
 void WebCursor::CleanupPlatformData() {
   return;
 }
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
   return;
 }
 
 }  // namespace content