Even more native input dispatch work in progress.

Added more tests.
Fixed a regression in Vector.
Fixed bugs in pointer tracking.
Fixed a starvation issue in PollLoop when setting or removing callbacks.
Fixed a couple of policy nits.

Modified the internal representation of MotionEvent to be more
efficient and more consistent.

Added code to skip/cancel virtual key processing when there are multiple
pointers down.  This helps to better disambiguate virtual key presses
from stray touches (such as cheek presses).

Change-Id: I2a7d2cce0195afb9125b23378baa94fd2fc6671c
diff --git a/include/ui/InputTransport.h b/include/ui/InputTransport.h
index 9537523..7b182f3 100644
--- a/include/ui/InputTransport.h
+++ b/include/ui/InputTransport.h
@@ -62,7 +62,7 @@
      * Returns OK on success.
      */
     static status_t openInputChannelPair(const String8& name,
-            InputChannel** outServerChannel, InputChannel** outClientChannel);
+            sp<InputChannel>& outServerChannel, sp<InputChannel>& outClientChannel);
 
     inline String8 getName() const { return mName; }
     inline int32_t getAshmemFd() const { return mAshmemFd; }
@@ -72,7 +72,8 @@
     /* Sends a signal to the other endpoint.
      *
      * Returns OK on success.
-     * Errors probably indicate that the channel is broken.
+     * Returns DEAD_OBJECT if the channel's peer has been closed.
+     * Other errors probably indicate that the channel is broken.
      */
     status_t sendSignal(char signal);
 
@@ -81,6 +82,7 @@
      *
      * Returns OK on success.
      * Returns WOULD_BLOCK if there is no signal present.
+     * Returns DEAD_OBJECT if the channel's peer has been closed.
      * Other errors probably indicate that the channel is broken.
      */
     status_t receiveSignal(char* outSignal);
@@ -298,7 +300,7 @@
      * Returns INVALID_OPERATION if there is no currently published event.
      * Returns NO_MEMORY if the event could not be created.
      */
-    status_t consume(InputEventFactoryInterface* factory, InputEvent** event);
+    status_t consume(InputEventFactoryInterface* factory, InputEvent** outEvent);
 
     /* Sends a finished signal to the publisher to inform it that the current message is
      * finished processing.