Merge "Ensure that focusable stack is focused when starting a new activity."

                // since the app transition will not be triggered through the resume channel.

                mWindowManager.executeAppTransition();

            } else {

                // If the target stack was not previously focusable (previous top running activity

                // on that stack was not visible) then any prior calls to move the stack to the

                // will not update the focused stack.  If starting the new activity now allows the

                // task stack to be focusable, then ensure that we now update the focused stack

                // accordingly.

                if (mTargetStack.isFocusable() && !mSupervisor.isFocusedStack(mTargetStack)) {

                    mTargetStack.moveToFront("startActivityUnchecked");

                }

                mSupervisor.resumeFocusedStackTopActivityLocked(mTargetStack, mStartActivity,

                        mOptions);

            }