Merge "Check if WindowToken is visible before adding dim."

        if (!mAnimatingExit && mAppDied) {

            mIsDimming = true;

            dimmer.dimAbove(getPendingTransaction(), this, DEFAULT_DIM_AMOUNT_DEAD_WINDOW);

        } else if ((mAttrs.flags & FLAG_DIM_BEHIND) != 0

                && !mAnimatingExit && isVisible() && !mWinAnimator.mLastHidden) {

        } else if ((mAttrs.flags & FLAG_DIM_BEHIND) != 0 && isVisibleNow()

                && !mWinAnimator.mLastHidden) {

            // Only show a dim behind when the following is satisfied:

            // 1. The window has the flag FLAG_DIM_BEHIND

            // 2. The WindowToken is not hidden so dims aren't shown when the window is exiting.

            // 3. The WS is considered visible according to the isVisible() method

            // 4. The WSA is not hidden.

            mIsDimming = true;

            dimmer.dimBelow(getPendingTransaction(), this, mAttrs.dimAmount);

        }