Change API from flush(handle) to flush(). Call flush on all active sensors in the given SensorEventConnection.

Change-Id: I4ef2bec80406c517903ab9782dc9eaf3fa8b7f36
diff --git a/include/gui/ISensorEventConnection.h b/include/gui/ISensorEventConnection.h
index 00eecc4..f64c6b8 100644
--- a/include/gui/ISensorEventConnection.h
+++ b/include/gui/ISensorEventConnection.h
@@ -39,7 +39,7 @@
     virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
                                    nsecs_t maxBatchReportLatencyNs, int reservedFlags) = 0;
     virtual status_t setEventRate(int handle, nsecs_t ns) = 0;
-    virtual status_t flushSensor(int handle) = 0;
+    virtual status_t flush() = 0;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/gui/SensorEventQueue.h b/include/gui/SensorEventQueue.h
index a3a9daa..0bfc7a0 100644
--- a/include/gui/SensorEventQueue.h
+++ b/include/gui/SensorEventQueue.h
@@ -74,7 +74,7 @@
     status_t enableSensor(int32_t handle, int32_t samplingPeriodUs, int maxBatchReportLatencyUs,
                           int reservedFlags) const;
     status_t disableSensor(int32_t handle) const;
-    status_t flushSensor(int32_t handle) const;
+    status_t flush() const;
 
 private:
     sp<Looper> getLooper() const;