Merge "Revert "Removing unused tracing"" into sc-v2-dev am: f2c35587d6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15883599

Change-Id: I632c359b9e2d699d53f3610ed8deae3911610f4e

tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java

@@ -153,6 +153,8 @@ public abstract class AbstractLauncherUiTest {
     public static String dumpHprofData() {
         String result;
         if (sDumpWasGenerated) {
+            Log.d("b/195319692", "dump has already been generated by another test",
+                    new Exception());
             result = "dump has already been generated by another test";
         } else {
             try {
@@ -167,6 +169,7 @@ public abstract class AbstractLauncherUiTest {
                             "am dumpheap " + device.getLauncherPackageName() + " " + fileName);
                 }
                 sDumpWasGenerated = true;
+                Log.d("b/195319692", "sDumpWasGenerated := true", new Exception());
                 result = "memory dump filename: " + fileName;
             } catch (Throwable e) {
                 Log.e(TAG, "dumpHprofData failed", e);