jni_generator: Pass object parameters as JavaParamRef.

content/shell/browser/shell_mojo_test_utils_android.cc

Index: content/shell/browser/shell_mojo_test_utils_android.cc
diff --git a/content/shell/browser/shell_mojo_test_utils_android.cc b/content/shell/browser/shell_mojo_test_utils_android.cc
index 04d3ad6aad92530e7213b6f790f4fa11ddb743e2..ba8f5e98a67c5d0a717bcc8cc0b7cde07d3db1c1 100644
--- a/content/shell/browser/shell_mojo_test_utils_android.cc
+++ b/content/shell/browser/shell_mojo_test_utils_android.cc
@@ -23,19 +23,20 @@ struct TestEnvironment {
 
 namespace content {
 
-static jlong SetupTestEnvironment(JNIEnv* env, jclass jcaller) {
+static jlong SetupTestEnvironment(JNIEnv* env,
+                                  const JavaParamRef<jclass>& jcaller) {
   return reinterpret_cast<intptr_t>(new TestEnvironment());
 }
 
 static void TearDownTestEnvironment(JNIEnv* env,
-                                    jclass jcaller,
+                                    const JavaParamRef<jclass>& jcaller,
                                     jlong test_environment) {
   delete reinterpret_cast<TestEnvironment*>(test_environment);
 }
 
 static ScopedJavaLocalRef<jobject> CreateServiceRegistryPair(
     JNIEnv* env,
-    jclass jcaller,
+    const JavaParamRef<jclass>& jcaller,
     jlong native_test_environment) {
   TestEnvironment* test_environment =
       reinterpret_cast<TestEnvironment*>(native_test_environment);
@@ -64,7 +65,9 @@ static ScopedJavaLocalRef<jobject> CreateServiceRegistryPair(
                                           wrapper_b->GetObj().obj());
 }
 
-static void RunLoop(JNIEnv* env, jclass jcaller, jlong timeout_ms) {
+static void RunLoop(JNIEnv* env,
+                    const JavaParamRef<jclass>& jcaller,
+                    jlong timeout_ms) {
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::MessageLoop::QuitClosure(),