Sync focus stack frame and layer with focus app.

Update focus stack frame/layer when focus app is changed to avoid
focus stack/layer isn't updated synchronously with focus app, it's
due to performLayoutAndPlaceSurfacesLocked() is not necessarily
called on focus app change; it will cause sending mismatching
TAP_OUTSIDE_STACK message if there is effectual incoming pointer
event, hence may also result in focus stack is changed again,
therefore erroneous focus app is set by ActivityManager at final.

Change-Id: Ia0ec9a543be887b51a3b29b3e62fdd471c15edf2
Signed-off-by: tingna_sung <tingna_sung@htc.com>
Not include fullscreen opaque window on screenshot

Extend the fullscreen meaning by adding opaque drawn check on
screenshot application; if there is a fullscreen window but not
opaque, we will continue finding behind windows; otherwise ending up
including behind windows. It's able to help avoiding capturing BLACK
screenshot bitmap.

Change-Id: I1c7e8f513c366688ea8001c3d0c799f3522f0ffd
Signed-off-by: tingna_sung <tingna_sung@htc.com>
Measure absolute value of pointer motion distance

If pointer is moving to the negative axis direction, pointer movement
distance will always less than pre-defined mMotionSlop, thus
TAP_OUTSIDE_STACK will have chance to be sent, will cause unnecessary
focus stack switch.

Change-Id: Ia4c066bebce250257c7361ef976907a0ca2c6461
Signed-off-by: tingna_sung <tingna_sung@htc.com>
ANR caused by incorrect cleanup in BroadcastQueue.

Two broadcasts could be sent to the same app simultaneously:
one foreground, one background. For example, LOCALE_CHANGED
and PACKAGE_CHANGED are delievered to com.android.vending
at the same time.
1. AMS started new vending process to handle LOCALE_CHANGED.
   And set app.curReceiver = LOCALE_CHANGED.
2. Before LOCALE_CHANGED is handled by vending process,
   PACKAGE_CHANGED was delievered to vending process too.
   AMS set app.curReceiver = PACKAGE_CHANGED. Bad!
3. Vending process finished handling LOCALE_CHANGED.
   AMS clear app.curReceiver = NULL. Bad!
   And Vending process  killed itself without handling
   PACKAGE_CHANGED.
4. AMS known vending process has died, but didn't know that
   BgBroadcastQueue was still waiting for finish message
   for PACKAGE_CHANGED.
At last, BgBroadcastQueue reported ANR for PACKAGE_CHANGED.

This patch adds protection before clearing app.curReceiver,
only set to NULL if the finishing receiver = app.curReceiver
So handleAppDied would know that PACKAGE_CHANGED was not
finished yet, it will abort the broadcast and continue.

Change-Id: Ic4f31b35e21823d4a3c27712391ecbede213a494
Signed-off-by: Guobin Zhang <guobin.zhang@intel.com>
Fix bad exclude region in landscape

Update DisplayContent.mBaseDisplayRect when device orientation is
changed, it avoids to set incorrect initial value of
mTouchExcludeRegion, that will cause result of calculated
mTouchExcludeRegion becomes an incorrect strange region on
landscape orientation.

Change-Id: I993864653edc2852f91abed7891e6631b4bae15a
Signed-off-by: tingna_sung <tingna_sung@htc.com>