Tighten enforcement of file modes.

Bug: 8275867
Change-Id: I4da14f2dd0049aca69636999696c1f3c02b3b792
Remove opaque check in GLRenderer when preparing dirty region.

Since preserved swap is enabled, we need to clear the color buffer
when the scissor rect is prepared for a new process. This prevents
garbage to be present from the previous process in the color buffer.

CRs-Fixed: 391492, 403067, 405916

Change-Id: I1f72a3dee2f5d58a984f4cd367c9f7bf08ab9d6a

Conflicts:

	libs/hwui/OpenGLRenderer.cpp

[PATCH] Remove opaque check in preparing dirty region

Since preserved swap is enabled, we need to clear the color buffer
when the scissor rect is prepared for a new rocess. This prevents
garbage to be present from the previous process in the color buffer.

(cherry picked from commit 2b5e584e2615852b68a69bb529c6926190246b64)

Change-Id: I92a4fa35e0746f12fcd736e21fd30d9c4b644a8a
CRs-Fixed: 391492, 403067, 405916

Conflicts:

	libs/hwui/OpenGLRenderer.cpp

Enable scissor when preparing dirty rect that is opaque

Now enabling scissor before setting it in the opaque case, previously was not doing so.

Change-Id: I1ea904cf01603096e423556090564291ab712d36
CRs-Fixed: 465346
Depends-on: 278453
Two REMOVE_PROVIDER messages caused by race condition.

Fix a bug in unstable ContentProvider.
IllegalStateException: ref counts can't go to zero here: stable=0 unstable=0
IllegalStateException: unstable count < 0: -1

There is a race between main thread and background database thread. Main thread
is responsible for handling the REMOVE_PROVIDER message. Database thread starts
insert or query request again and again. acquireProvider in db thread will often
snatch provider from the jaws of death, sometime it fails to remove REMOVE_PROVIDER
which is already fired out from MessageQueue. But completeRemoveProvider in main
thread gets suspended when trying to execute the critical section. If db thread
released the provider before main thread resumes the execution, then two
REMOVE_PROVIDER messages will be executed.

Change-Id: I8588aa1d1a8bc444dcd2adf6f8bc3f055cebbdc4
Signed-off-by: Guobin Zhang <guobin.zhang@intel.com>