Merge "Makes sure the magnifier source bounds doesn't beyond the surface." into rvc-dev

            // Gets the startX for new style, which should be bounded by the horizontal bounds.

            // Also calculates the left/right cut width for pixel copy.

            leftBound += mViewCoordinatesInSurface[0];

            rightBound += mViewCoordinatesInSurface[0];

            leftBound = Math.max(leftBound + mViewCoordinatesInSurface[0], 0);

            rightBound = Math.min(

                rightBound + mViewCoordinatesInSurface[0], mContentCopySurface.mWidth);

            mLeftCutWidth = Math.max(0, leftBound - startX);

            mRightCutWidth = Math.max(0, startX + mSourceWidth - rightBound);

            startX = Math.max(startX, leftBound);