Automated g4 rollback of changelist 638827797.

*** Reason for rollback ***

Roll-forward: previous static reference to java.lang.reflect.GenericDeclaration in Java failed because it's an interface, and so was transpiled to an ObjC protocol. This CL makes a native static reference to the protocol's backing class.

*** Original change description ***

Automated g4 rollback of changelist 638722935.

*** Reason for rollback ***

com.google.gson.internal.reflect.ReflectionHelper$RecordSupportedHelper was unable to reflect on java.lang.reflect.GenericDeclaration.

*** Original change description ***

Supports linking the core jre_emul subset library without the `-ObjC` flag, by making static references to classes that are dynamically loaded. The static references ensure that the classes continue to be linked into the app.

PiperOrigin-RevId: 639112548

Author: tomball

jre_emul/Classes/com/google/j2objc/util/logging/IOSLogHandler.java

@@ -16,8 +16,8 @@
 
 import java.io.PrintWriter;
 import java.io.StringWriter;
-import java.util.logging.Formatter;
 import java.util.logging.Handler;
+import java.util.logging.SimpleFormatter;
 import java.util.logging.LogRecord;
 
 /*-[
@@ -92,14 +92,25 @@
 #pragma clang diagnostic pop
 ]-*/
 
+/*-[
+// Static, unused reference to java.lang.reflect.GenericDeclaration's backing interface.
+// Normally apps don't reflect on protocols, but this is necessary to support GSON,
+// which does.
+#include "java/lang/reflect/GenericDeclaration.h"
+__attribute__((unused)) void generic_declaration_class_reference(void) {
+  static IOSClass *cls;
+  cls = JavaLangReflectGenericDeclaration_class_();
+}
+]-*/
+
 /**
  * Handler implementation that calls iOS asl_log(), or os_log() if supported by the OS.
  *
  * @author Tom Ball
  */
 public class IOSLogHandler extends Handler {
 
-  static class IOSLogFormatter extends Formatter {
+  static class IOSLogFormatter extends SimpleFormatter {
 
     /**
      * Very simple formatter, since asl_log adds its own text.

jre_emul/android/platform/libcore/ojluni/src/main/java/java/util/logging/LogManager.java

@@ -883,7 +883,7 @@ private void processParentHandlers(final Logger logger, final String name) {
                 public Void run() {
              */
                     if (logger != owner.rootLogger) {
-                        boolean useParent = owner.getBooleanProperty(name + ".useParentHandlers", true);
+        boolean useParent = owner.getBooleanProperty(name + ".useParentHandlers", true);
                         if (!useParent) {
                             logger.setUseParentHandlers(false);
                         }
@@ -1935,4 +1935,7 @@ static void invokePropertyChange(Object listener, Object ev) {
             }
         }
     }
+
+  // j2objc: ensure dynamically loaded class support class is linked.
+  private static final Class<?> unused = LoggingProxyImpl.class;
 }