Revert of Removes usage of native base::android::GetApplicationContext()

webrtc/modules/utility/source/jvm_android.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 199 matching lines @@
   CHECK_EXCEPTION(jni_);
   const int size = jni_->GetStringUTFLength(j_string);
   CHECK_EXCEPTION(jni_);
   std::string ret(jchars, size);
   jni_->ReleaseStringUTFChars(j_string, jchars);
   CHECK_EXCEPTION(jni_);
   return ret;
 }
 
 // static
-void JVM::Initialize(JavaVM* jvm) {
+void JVM::Initialize(JavaVM* jvm, jobject context) {
   ALOGD("JVM::Initialize%s", GetThreadInfo().c_str());
   RTC_CHECK(!g_jvm);
-  g_jvm = new JVM(jvm);
+  g_jvm = new JVM(jvm, context);
 }
 
 // static
 void JVM::Uninitialize() {
   ALOGD("JVM::Uninitialize%s", GetThreadInfo().c_str());
   RTC_DCHECK(g_jvm);
   delete g_jvm;
   g_jvm = nullptr;
 }
 
 // static
 JVM* JVM::GetInstance() {
   RTC_DCHECK(g_jvm);
   return g_jvm;
 }
 
-JVM::JVM(JavaVM* jvm) : jvm_(jvm) {
+JVM::JVM(JavaVM* jvm, jobject context)
+    : jvm_(jvm) {
   ALOGD("JVM::JVM%s", GetThreadInfo().c_str());
   RTC_CHECK(jni()) << "AttachCurrentThread() must be called on this thread.";
+  context_ = NewGlobalRef(jni(), context);
   LoadClasses(jni());
 }
 
 JVM::~JVM() {
   ALOGD("JVM::~JVM%s", GetThreadInfo().c_str());
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   FreeClassReferences(jni());
+  DeleteGlobalRef(jni(), context_);
 }
 
 std::unique_ptr<JNIEnvironment> JVM::environment() {
   ALOGD("JVM::environment%s", GetThreadInfo().c_str());
   // The JNIEnv is used for thread-local storage. For this reason, we cannot
   // share a JNIEnv between threads. If a piece of code has no other way to get
   // its JNIEnv, we should share the JavaVM, and use GetEnv to discover the
   // thread's JNIEnv. (Assuming it has one, if not, use AttachCurrentThread).
   // See // http://developer.android.com/training/articles/perf-jni.html.
   JNIEnv* jni = GetEnv(jvm_);
   if (!jni) {
     ALOGE("AttachCurrentThread() has not been called on this thread.");
     return std::unique_ptr<JNIEnvironment>();
   }
   return std::unique_ptr<JNIEnvironment>(new JNIEnvironment(jni));
 }
 
 JavaClass JVM::GetClass(const char* name) {
   ALOGD("JVM::GetClass(%s)%s", name, GetThreadInfo().c_str());
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   return JavaClass(jni(), LookUpClass(name));
 }
 
 }  // namespace webrtc