Add extra logs for when pulse is dropped

Test: adb shell settings put global systemui/buffer/DozeLog v,
check logs
Bug: 197176772

Change-Id: I2251426fe7feabb1c982a8e9c95320868a60546b

packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java

@@ -116,11 +116,18 @@ public class DozeScrimController implements StateListener {
 
         if (!mDozing || mPulseCallback != null) {
             if (DEBUG) {
-                Log.d(TAG, "Pulse supressed. Dozing: " + mDozeParameters + " had callback? "
+                Log.d(TAG, "Pulse suppressed. Dozing: " + mDozeParameters + " had callback? "
                         + (mPulseCallback != null));
             }
             // Pulse suppressed.
             callback.onPulseFinished();
+            if (!mDozing) {
+                mDozeLog.tracePulseDropped("device isn't dozing");
+            } else {
+                mDozeLog.tracePulseDropped("already has pulse callback mPulseCallback="
+                        + mPulseCallback);
+            }
+
             return;
         }