Camera API 2, Device 2/3: Implement idle and shutter callbacks

- Update callback Binder interface
- Rename frameId to be requestId to be consistent and disambiguate
  from frameNumber.
- Implement shutter callback from HAL2/3 notify()
  - Add in-flight tracking to HAL2
  - Add requestId to in-flight tracking
  - Report requestId from shutter callback
- Implement idle callback from HAL3 process_capture_result
  - Add new idle tracker thread
  - Update all idle waiting to use the tracker
  - Add reporting from request thread, all streams to tracker
  - Remove existing idle waiting infrastructure

Bug: 10549462
Change-Id: I867bfc248e3848c50e71527e3561fe92dc037958
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.h b/services/camera/libcameraservice/common/Camera2ClientBase.h
index d23197c..61e44f0 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.h
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.h
@@ -62,7 +62,8 @@
      */
 
     virtual void          notifyError(int errorCode, int arg1, int arg2);
-    virtual void          notifyShutter(int frameNumber, nsecs_t timestamp);
+    virtual void          notifyIdle();
+    virtual void          notifyShutter(int requestId, nsecs_t timestamp);
     virtual void          notifyAutoFocus(uint8_t newState, int triggerId);
     virtual void          notifyAutoExposure(uint8_t newState, int triggerId);
     virtual void          notifyAutoWhitebalance(uint8_t newState,