Make GetApplicationContext return a JavaRef.

content/browser/media/android/media_resource_getter_impl.cc

 // Copyright 2013 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.
 
 #include "content/browser/media/android/media_resource_getter_impl.h"
 
 #include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/path_service.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/browser/blob_storage/chrome_blob_storage_context.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/fileapi/browser_file_system_helper.h"
 #include "content/browser/resource_context_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/url_constants.h"
 #include "jni/MediaResourceGetter_jni.h"
 #include "media/base/android/media_url_interceptor.h"
 #include "net/base/auth.h"
 #include "net/cookies/cookie_store.h"
 #include "net/http/http_auth.h"
 #include "net/http/http_transaction_factory.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "storage/browser/blob/blob_data_handle.h"
 #include "storage/browser/blob/blob_data_item.h"
 #include "storage/browser/blob/blob_data_snapshot.h"
 #include "storage/browser/blob/blob_storage_context.h"
 #include "url/gurl.h"
 
 using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaRef;
 using base::android::ScopedJavaLocalRef;
 
 namespace content {
 
 static void ReturnResultOnUIThread(
     const base::Callback<void(const std::string&)>& callback,
     const std::string& result) {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE, base::Bind(callback, result));
 }
@@ skipping 65 matching lines @@
 // Gets the metadata from a media URL. When finished, a task is posted to the UI
 // thread to run the callback function.
 static void GetMediaMetadata(
     const std::string& url, const std::string& cookies,
     const std::string& user_agent,
     const media::MediaResourceGetter::ExtractMediaMetadataCB& callback) {
   JNIEnv* env = base::android::AttachCurrentThread();
 
   ScopedJavaLocalRef<jstring> j_url_string = ConvertUTF8ToJavaString(env, url);
   ScopedJavaLocalRef<jstring> j_cookies = ConvertUTF8ToJavaString(env, cookies);
-  jobject j_context = base::android::GetApplicationContext();
+  const JavaRef<jobject>& j_context = base::android::GetApplicationContext();
   ScopedJavaLocalRef<jstring> j_user_agent = ConvertUTF8ToJavaString(
       env, user_agent);
   ScopedJavaLocalRef<jobject> j_metadata =
       Java_MediaResourceGetter_extractMediaMetadata(env,
                                                     j_context,
                                                     j_url_string.obj(),
                                                     j_cookies.obj(),
                                                     j_user_agent.obj());
 
   PostMediaMetadataCallbackTask(callback, env, j_metadata);
@@ skipping 240 matching lines @@
     const int64_t size,
     const ExtractMediaMetadataCB& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
   pool->PostWorkerTask(
       FROM_HERE,
       base::Bind(&GetMediaMetadataFromFd, fd, offset, size, callback));
 }
 
 }  // namespace content