Disable all warning messages from missing service loaders

Bug: 169753370
Change-Id: Ib82e3c4fb31af01acc6c71b96e66350434672702
diff --git a/src/main/java/com/android/tools/r8/graph/AppServices.java b/src/main/java/com/android/tools/r8/graph/AppServices.java
index 70bb382..ffe915a 100644
--- a/src/main/java/com/android/tools/r8/graph/AppServices.java
+++ b/src/main/java/com/android/tools/r8/graph/AppServices.java
@@ -301,24 +301,23 @@
                           origin);
                       return false;
                     }
-                    // TODO(b/169753370): Re-enable again after roll.
-                    // if (appView.enableWholeProgramOptimizations()) {
-                    //   DexClass serviceImplementationClass =
-                    //       appView
-                    //           .appInfo()
-                    //           .definitionForWithoutExistenceAssert(serviceImplementationType);
-                    //   if (serviceImplementationClass == null) {
-                    //     warn(
-                    //         "Unexpected reference to missing service implementation class in "
-                    //             + "META-INF/services/"
-                    //             + serviceType.toSourceString()
-                    //             + ": "
-                    //             + serviceImplementationType.toSourceString()
-                    //             + ".",
-                    //         serviceImplementationType,
-                    //         origin);
-                    //   }
-                    // }
+                    if (appView.enableWholeProgramOptimizations()) {
+                      DexClass serviceImplementationClass =
+                          appView
+                              .appInfo()
+                              .definitionForWithoutExistenceAssert(serviceImplementationType);
+                      if (serviceImplementationClass == null) {
+                        warn(
+                            "Unexpected reference to missing service implementation class in "
+                                + "META-INF/services/"
+                                + serviceType.toSourceString()
+                                + ": "
+                                + serviceImplementationType.toSourceString()
+                                + ".",
+                            serviceImplementationType,
+                            origin);
+                      }
+                    }
                     // Only keep one of each implementation type in the list.
                     return !serviceImplementations.contains(serviceImplementationType);
                   })
@@ -332,6 +331,10 @@
       }
 
       private void warn(String message, DexType type, Origin origin) {
+        if (true) {
+          // TODO(b/169753370): Re-enable again after roll.
+          return;
+        }
         if (!options.getProguardConfiguration().getDontWarnPatterns().matches(type)) {
           options.reporter.warning(new StringDiagnostic(message, origin));
         }
diff --git a/src/test/java/com/android/tools/r8/rewrite/serviceloaders/MissingServiceClassTest.java b/src/test/java/com/android/tools/r8/rewrite/serviceloaders/MissingServiceClassTest.java
index 8325b62..170116b 100644
--- a/src/test/java/com/android/tools/r8/rewrite/serviceloaders/MissingServiceClassTest.java
+++ b/src/test/java/com/android/tools/r8/rewrite/serviceloaders/MissingServiceClassTest.java
@@ -4,8 +4,6 @@
 
 package com.android.tools.r8.rewrite.serviceloaders;
 
-import static com.android.tools.r8.DiagnosticsMatcher.diagnosticMessage;
-import static org.hamcrest.CoreMatchers.containsString;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
@@ -51,19 +49,8 @@
                 AppServices.SERVICE_DIRECTORY_NAME + Service.class.getTypeName(),
                 Origin.unknown()))
         .addOptionsModification(o -> o.dataResourceConsumer = dataResourceConsumer)
-        .allowDiagnosticWarningMessages()
         .setMinApi(parameters.getApiLevel())
         .compile()
-        .inspectDiagnosticMessages(
-            inspector -> {
-              inspector.assertAllWarningsMatch(
-                  diagnosticMessage(
-                      containsString(
-                          "Unexpected reference to missing service class: "
-                              + AppServices.SERVICE_DIRECTORY_NAME
-                              + Service.class.getTypeName()
-                              + ".")));
-            })
         .addRunClasspathClasses(Service.class, ServiceImpl.class)
         .run(parameters.getRuntime(), TestClass.class)
         .assertSuccessWithEmptyOutput();