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

base/android/jni_generator/testFromJavaP.golden

-// 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.
 
 // This file is autogenerated by
 //     base/android/jni_generator/jni_generator.py
 // For
 //     java/io/InputStream
 
 #ifndef java_io_InputStream_JNI
 #define java_io_InputStream_JNI
 
 #include <jni.h>
 
 #include "base/android/jni_generator/jni_generator_helper.h"
 
 #include "base/android/jni_int_wrapper.h"
 
 // Step 1: forward declarations.
 namespace {
 const char kInputStreamClassPath[] = "java/io/InputStream";
+#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_InputStream_clazz = NULL;
+jclass InputStream_clazz(JNIEnv*) { return g_InputStream_clazz; }
+#if __clang__
+#pragma clang diagnostic pop
+#endif
 
 }  // namespace
 
 namespace JNI_InputStream {
 
 // Step 2: method stubs.
 
 static base::subtle::AtomicWord g_InputStream_available = 0;
 static jint Java_InputStream_available(JNIEnv* env, jobject obj) __attribute__
     ((unused));
 static jint Java_InputStream_available(JNIEnv* env, jobject obj) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, 0);
+      InputStream_clazz(env), 0);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "available",
       "()I",
       &g_InputStream_available);
 
   jint ret =
       env->CallIntMethod(obj,
           method_id);
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_close = 0;
 static void Java_InputStream_close(JNIEnv* env, jobject obj) __attribute__
     ((unused));
 static void Java_InputStream_close(JNIEnv* env, jobject obj) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz);
+      InputStream_clazz(env));
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "close",
       "()V",
       &g_InputStream_close);
 
      env->CallVoidMethod(obj,
           method_id);
   jni_generator::CheckException(env);
 
 }
 
 static base::subtle::AtomicWord g_InputStream_mark = 0;
 static void Java_InputStream_mark(JNIEnv* env, jobject obj, JniIntWrapper p0)
     __attribute__ ((unused));
 static void Java_InputStream_mark(JNIEnv* env, jobject obj, JniIntWrapper p0) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz);
+      InputStream_clazz(env));
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "mark",
       "(I)V",
       &g_InputStream_mark);
 
      env->CallVoidMethod(obj,
           method_id, as_jint(p0));
   jni_generator::CheckException(env);
 
 }
 
 static base::subtle::AtomicWord g_InputStream_markSupported = 0;
 static jboolean Java_InputStream_markSupported(JNIEnv* env, jobject obj)
     __attribute__ ((unused));
 static jboolean Java_InputStream_markSupported(JNIEnv* env, jobject obj) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, false);
+      InputStream_clazz(env), false);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "markSupported",
       "()Z",
       &g_InputStream_markSupported);
 
   jboolean ret =
       env->CallBooleanMethod(obj,
           method_id);
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_readI = 0;
 static jint Java_InputStream_readI(JNIEnv* env, jobject obj) __attribute__
     ((unused));
 static jint Java_InputStream_readI(JNIEnv* env, jobject obj) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, 0);
+      InputStream_clazz(env), 0);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "read",
       "()I",
       &g_InputStream_readI);
 
   jint ret =
       env->CallIntMethod(obj,
           method_id);
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_readI_AB = 0;
 static jint Java_InputStream_readI_AB(JNIEnv* env, jobject obj, jbyteArray p0)
     __attribute__ ((unused));
 static jint Java_InputStream_readI_AB(JNIEnv* env, jobject obj, jbyteArray p0) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, 0);
+      InputStream_clazz(env), 0);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "read",
       "([B)I",
       &g_InputStream_readI_AB);
 
   jint ret =
       env->CallIntMethod(obj,
           method_id, p0);
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_readI_AB_I_I = 0;
 static jint Java_InputStream_readI_AB_I_I(JNIEnv* env, jobject obj, jbyteArray
     p0,
     JniIntWrapper p1,
     JniIntWrapper p2) __attribute__ ((unused));
 static jint Java_InputStream_readI_AB_I_I(JNIEnv* env, jobject obj, jbyteArray
     p0,
     JniIntWrapper p1,
     JniIntWrapper p2) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, 0);
+      InputStream_clazz(env), 0);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "read",
       "([BII)I",
       &g_InputStream_readI_AB_I_I);
 
   jint ret =
       env->CallIntMethod(obj,
           method_id, p0, as_jint(p1), as_jint(p2));
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_reset = 0;
 static void Java_InputStream_reset(JNIEnv* env, jobject obj) __attribute__
     ((unused));
 static void Java_InputStream_reset(JNIEnv* env, jobject obj) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz);
+      InputStream_clazz(env));
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "reset",
       "()V",
       &g_InputStream_reset);
 
      env->CallVoidMethod(obj,
           method_id);
   jni_generator::CheckException(env);
 
 }
 
 static base::subtle::AtomicWord g_InputStream_skip = 0;
 static jlong Java_InputStream_skip(JNIEnv* env, jobject obj, jlong p0)
     __attribute__ ((unused));
 static jlong Java_InputStream_skip(JNIEnv* env, jobject obj, jlong p0) {
   /* Must call RegisterNativesImpl()  */
   CHECK_CLAZZ(env, obj,
-      g_InputStream_clazz, 0);
+      InputStream_clazz(env), 0);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "skip",
       "(J)J",
       &g_InputStream_skip);
 
   jlong ret =
       env->CallLongMethod(obj,
           method_id, p0);
   jni_generator::CheckException(env);
   return ret;
 }
 
 static base::subtle::AtomicWord g_InputStream_Constructor = 0;
 static base::android::ScopedJavaLocalRef<jobject>
     Java_InputStream_Constructor(JNIEnv* env) __attribute__ ((unused));
 static base::android::ScopedJavaLocalRef<jobject>
     Java_InputStream_Constructor(JNIEnv* env) {
   /* Must call RegisterNativesImpl()  */
-  CHECK_CLAZZ(env, g_InputStream_clazz,
-      g_InputStream_clazz, NULL);
+  CHECK_CLAZZ(env, InputStream_clazz(env),
+      InputStream_clazz(env), NULL);
   jmethodID method_id =
       base::android::MethodID::LazyGet<
       base::android::MethodID::TYPE_INSTANCE>(
-      env, g_InputStream_clazz,
+      env, InputStream_clazz(env),
       "<init>",
       "()V",
       &g_InputStream_Constructor);
 
   jobject ret =
-      env->NewObject(g_InputStream_clazz,
+      env->NewObject(InputStream_clazz(env),
           method_id);
   jni_generator::CheckException(env);
   return base::android::ScopedJavaLocalRef<jobject>(env, ret);
 }
 
 // Step 3: RegisterNatives.
 
 static bool RegisterNativesImpl(JNIEnv* env) {
   g_InputStream_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
       base::android::GetClass(env, kInputStreamClassPath).obj()));
 
   return true;
 }
 
 }  // namespace JNI_InputStream
 
 #endif  // java_io_InputStream_JNI