Dumpsys sensorservice --proto

Add protobuf dumpsys of sensorservice. Primarily used by incident
service to capture an incident report proto.

Command to invoke (any of the following after lunch and env setup):
$ adb shell dumpsys sensorservice --proto
$ adb shell incident 3053
$ incident_report 3053

Bug: 146086105
Test: Execute the above commands and compare the output against dumpsys
      sensorservice

Change-Id: I9d7af7d4bc25fa485bbc2933fbb8322307780989
diff --git a/services/sensorservice/SensorEventConnection.h b/services/sensorservice/SensorEventConnection.h
index fd881cb..caf5d7c 100644
--- a/services/sensorservice/SensorEventConnection.h
+++ b/services/sensorservice/SensorEventConnection.h
@@ -62,6 +62,7 @@
     bool removeSensor(int32_t handle);
     void setFirstFlushPending(int32_t handle, bool value);
     void dump(String8& result);
+    void dump(util::ProtoOutputStream* proto) const;
     bool needsWakeLock();
     void resetWakeLockRefCount();
     String8 getPackageName() const;