mac: Move more 10.7 api stuff into sdk_forward_declarations.h

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index 7b98f6c4f968dcc49385d306e3f153b734e43194..8d570b45dcf0599016250c9b131adcb74d35a192 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -13,6 +13,7 @@
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
+#include "base/mac/sdk_forward_declarations.h"
 #import "base/memory/scoped_nsobject.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
@@ -80,24 +81,6 @@ using WebKit::WebMouseWheelEvent;
 // Declare things 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
-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;
-
-@interface NSEvent (LionAPI)
-- (NSEventPhase)phase;
-@end
-
-@interface NSWindow (LionAPI)
-- (CGFloat)backingScaleFactor;
-@end
-
 @interface NSView (NSOpenGLSurfaceResolutionLionAPI)
 - (void)setWantsBestResolutionOpenGLSurface:(BOOL)flag;
 @end