CC_EXPORT extern const char kMaxTilesForInterestArea[];
CC_EXPORT extern const char kMaxUnusedResourceMemoryUsagePercentage[];
CC_EXPORT extern const char kEnablePinchVirtualViewport[];
+CC_EXPORT extern const char kDisablePinchVirtualViewport[];
CC_EXPORT extern const char kStrictLayerPropertyChangeChecking[];
CC_EXPORT extern const char kDisableCompositorTouchHitTesting[];