Make class lookup lazy in jni_generator when using lazy method lookup.

base/android/jni_generator/testJarJarRemapping.golden

Index: base/android/jni_generator/testJarJarRemapping.golden
diff --git a/base/android/jni_generator/testJarJarRemapping.golden b/base/android/jni_generator/testJarJarRemapping.golden
index 9b2c0b3fc67e31d6b12ddaca9d8052f948ade8b3..3325db078da82c5c8ba85a4c43e9f7ca882865fa 100644
--- a/base/android/jni_generator/testJarJarRemapping.golden
+++ b/base/android/jni_generator/testJarJarRemapping.golden
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -19,8 +19,16 @@
 // Step 1: forward declarations.
 namespace {
 const char kExampleClassPath[] = "com/test/jni_generator/Example";
+#if __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-function"
+#endif
 // Leaking this jclass as we cannot use LazyInstance from some threads.
 jclass g_Example_clazz = NULL;
+jclass Example_clazz(JNIEnv*) { return g_Example_clazz; }
+#if __clang__
+#pragma clang diagnostic pop
+#endif
 
 }  // namespace
 
@@ -69,11 +77,11 @@ static bool RegisterNativesImpl(JNIEnv* env) {
 
   const int kMethodsExampleSize = arraysize(kMethodsExample);
 
-  if (env->RegisterNatives(g_Example_clazz,
+  if (env->RegisterNatives(Example_clazz(env),
                            kMethodsExample,
                            kMethodsExampleSize) < 0) {
     jni_generator::HandleRegistrationError(
-        env, g_Example_clazz, __FILE__);
+        env, Example_clazz(env), __FILE__);
     return false;
   }