Merge "Pass webview instance when getting base layer / color, and prevent null value" into jb-dev

    }

    public int getPageBackgroundColor() {

        return nativeGetBackgroundColor();

        if (mNativeClass == 0) return Color.WHITE;

        return nativeGetBackgroundColor(mNativeClass);

    }

    /**

        if (mNativeClass == 0) {

            return 0;

        }

        return nativeGetBaseLayer();

        return nativeGetBaseLayer(mNativeClass);

    }

    private void onZoomAnimationStart() {

    private native void     nativeSetHeightCanMeasure(boolean measure);

    private native boolean  nativeSetBaseLayer(int nativeInstance,

            int layer, boolean showVisualIndicator, boolean isPictureAfterFirstLayout);

    private native int      nativeGetBaseLayer();

    private native int      nativeGetBaseLayer(int nativeInstance);

    private native void     nativeCopyBaseContentToPicture(Picture pict);

    private native boolean  nativeHasContent();

    private native void     nativeStopGL();

     */

    private native boolean  nativeScrollLayer(int nativeInstance, int layer, int newX, int newY);

    private native void     nativeSetIsScrolling(boolean isScrolling);

    private native int      nativeGetBackgroundColor();

    private native int      nativeGetBackgroundColor(int nativeInstance);

    native boolean  nativeSetProperty(String key, String value);

    native String   nativeGetProperty(String key);

    /**