Merge "SurfaceFlinger: fix layer removal race condition" into ics-mr1

void SurfaceFlinger::commitTransaction()

{

    if (!mLayersPendingRemoval.isEmpty()) {

        // Notify removed layers now that they can't be drawn from

        for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) {

            mLayersPendingRemoval[i]->onRemoved();

        }

        mLayersPendingRemoval.clear();

    }

    mDrawingState = mCurrentState;

    mTransationPending = false;

    mTransactionCV.broadcast();

        mLayerPurgatory.add(layerBase);

    }

    layerBase->onRemoved();

    mLayersPendingRemoval.push(layerBase);

    // it's possible that we don't find a layer, because it might

    // have been destroyed already -- this is not technically an error

                Condition               mTransactionCV;

                SortedVector< sp<LayerBase> > mLayerPurgatory;

                bool                    mTransationPending;

                Vector< sp<LayerBase> > mLayersPendingRemoval;

                // protected by mStateLock (but we could use another lock)

                GraphicPlane                mGraphicPlanes[1];