Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

For this round, the fixes are only applied to the following to minimize breaking dependencies:
  * comments (excluding javaDoc annotations)
	* private constants
	* private functions
	* parameters within functions

BYPASS_INCLUSIVE_LANGUAGE_REASON=Just updating a few select inclusive language violations.
No-Typo-Check: Changes focused on inclusive language violations.
BUG: 295342157

Change-Id: I6aac693d52eb9fa9f6640bebccfce169dfa67fa5
diff --git a/tests/ApkVerityTest/ApkVerityTestApp/feature_split/src/com/android/apkverity/feature_x/DummyActivity.java b/tests/ApkVerityTest/ApkVerityTestApp/feature_split/src/com/android/apkverity/feature_x/DummyActivity.java
index 0f694c2..fe91260 100644
--- a/tests/ApkVerityTest/ApkVerityTestApp/feature_split/src/com/android/apkverity/feature_x/DummyActivity.java
+++ b/tests/ApkVerityTest/ApkVerityTestApp/feature_split/src/com/android/apkverity/feature_x/DummyActivity.java
@@ -18,5 +18,5 @@
 
 import android.app.Activity;
 
-/** Dummy class just to generate some dex */
+/** Placeholder class just to generate some dex */
 public class DummyActivity extends Activity {}
diff --git a/tests/ApkVerityTest/ApkVerityTestApp/src/com/android/apkverity/DummyActivity.java b/tests/ApkVerityTest/ApkVerityTestApp/src/com/android/apkverity/DummyActivity.java
index 837c7be..a7bd771 100644
--- a/tests/ApkVerityTest/ApkVerityTestApp/src/com/android/apkverity/DummyActivity.java
+++ b/tests/ApkVerityTest/ApkVerityTestApp/src/com/android/apkverity/DummyActivity.java
@@ -18,5 +18,5 @@
 
 import android.app.Activity;
 
-/** Dummy class just to generate some dex */
+/** Placeholder class just to generate some dex */
 public class DummyActivity extends Activity {}