Rename writeToProto to be dumpDebug

We want to eventually migrate some of these APIs to be @SystemApi for mainline modules.
The #dumpDebug name is more appropriate than #writeToProto.

Bug: 142279786
Test: Manual
Change-Id: I60793e91cedf6b720d4ecef6a8484f4fed4ff30f
diff --git a/services/core/java/com/android/server/wm/KeyguardController.java b/services/core/java/com/android/server/wm/KeyguardController.java
index 318d88e..ac5c96b 100644
--- a/services/core/java/com/android/server/wm/KeyguardController.java
+++ b/services/core/java/com/android/server/wm/KeyguardController.java
@@ -552,7 +552,7 @@
             pw.println(sb.toString());
         }
 
-        void writeToProto(ProtoOutputStream proto, long fieldId) {
+        void dumpDebug(ProtoOutputStream proto, long fieldId) {
             final long token = proto.start(fieldId);
             proto.write(DISPLAY_ID, mDisplayId);
             proto.write(KEYGUARD_OCCLUDED, mOccluded);
@@ -570,7 +570,7 @@
         pw.println(prefix + "  mVisibilityTransactionDepth=" + mVisibilityTransactionDepth);
     }
 
-    void writeToProto(ProtoOutputStream proto, long fieldId) {
+    void dumpDebug(ProtoOutputStream proto, long fieldId) {
         final long token = proto.start(fieldId);
         proto.write(AOD_SHOWING, mAodShowing);
         proto.write(KEYGUARD_SHOWING, mKeyguardShowing);
@@ -586,7 +586,7 @@
 
     private void writeDisplayStatesToProto(ProtoOutputStream proto, long fieldId) {
         for (int i = 0; i < mDisplayStates.size(); i++) {
-            mDisplayStates.valueAt(i).writeToProto(proto, fieldId);
+            mDisplayStates.valueAt(i).dumpDebug(proto, fieldId);
         }
     }
 }