Merge "Immediately start drawing when becoming visible"

        mIsInTraversal = true;

        mWillDrawSoon = true;

        boolean windowSizeMayChange = false;

        boolean newSurface = false;

        boolean surfaceChanged = false;

        WindowManager.LayoutParams lp = mWindowAttributes;

                if (!hadSurface) {

                    if (mSurface.isValid()) {

                        // If we are creating a new surface, then we need to

                        // completely redraw it.  Also, when we get to the

                        // point of drawing it we will hold off and schedule

                        // a new traversal instead.  This is so we can tell the

                        // window manager about all of the windows being displayed

                        // before actually drawing them, so it can display then

                        // all at once.

                        newSurface = true;

                        // completely redraw it.

                        mFullRedrawNeeded = true;

                        mPreviousTransparentRegion.setEmpty();

        boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible;

        if (!cancelDraw && !newSurface) {

        if (!cancelDraw) {

            if (mPendingTransitions != null && mPendingTransitions.size() > 0) {

                for (int i = 0; i < mPendingTransitions.size(); ++i) {

                    mPendingTransitions.get(i).startChangingAnimations();