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

base/android/jni_generator/testNativesLong.golden

Index: base/android/jni_generator/testNativesLong.golden
diff --git a/base/android/jni_generator/testNativesLong.golden b/base/android/jni_generator/testNativesLong.golden
index 25b5fadf0d98b9996893272d9f1f2e3824faff36..6fafb5616ca3613f8f969f82a5d12e1f9c7ec82a 100644
--- a/base/android/jni_generator/testNativesLong.golden
+++ b/base/android/jni_generator/testNativesLong.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 kTestJniClassPath[] = "org/chromium/TestJni";
+#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_TestJni_clazz = NULL;
+jclass TestJni_clazz(JNIEnv*) { return g_TestJni_clazz; }
+#if __clang__
+#pragma clang diagnostic pop
+#endif
 
 }  // namespace
 
@@ -49,11 +57,11 @@ static bool RegisterNativesImpl(JNIEnv* env) {
 
   const int kMethodsTestJniSize = arraysize(kMethodsTestJni);
 
-  if (env->RegisterNatives(g_TestJni_clazz,
+  if (env->RegisterNatives(TestJni_clazz(env),
                            kMethodsTestJni,
                            kMethodsTestJniSize) < 0) {
     jni_generator::HandleRegistrationError(
-        env, g_TestJni_clazz, __FILE__);
+        env, TestJni_clazz(env), __FILE__);
     return false;
   }