Show ANR dialog for unresponsive gesture monitors

If a gesture monitor is unresponsive, today there will not be an ANR
dialog. Since the input channel token for the gesture monitor is not
provided to WindowManager, there is no way for the proper ANR to occur.

That means, the user will not know that the gesture monitor isn't
working.

To fix the issue, we record the pid of the caller when first registering
a gesture monitor. This will be stored in InputManagerService.
Next, when an ANR for this gesture monitor occurs, we will provide this
pid to the WM.

WM will use this pid to properly blame that process.

Bug: 161904619
Bug: 160903019
Test: atest AnrTest
Test: adb shell input dump
Change-Id: Ie1a16352a116914ba6550958ad41de07cff063be