jni: Forbid inappropriate JNI parameter conversions.

remoting/client/jni/chromoting_jni_runtime.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 "remoting/client/jni/chromoting_jni_runtime.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/library_loader/library_loader_hooks.h"
@@ skipping 22 matching lines @@
 bool RegisterChromotingJniRuntime(JNIEnv* env) {
   return remoting::RegisterNativesImpl(env);
 }
 
 // Implementation of stubs defined in JniInterface_jni.h. These are the entry
 // points for JNI calls from Java into C++.
 
 static void LoadNative(JNIEnv* env,
                        const JavaParamRef<jclass>& clazz,
                        const JavaParamRef<jobject>& context) {
-  base::android::ScopedJavaLocalRef<jobject> context_activity(env, context);
-  base::android::InitApplicationContext(env, context_activity);
+  base::android::InitApplicationContext(env, context);
 
   // The google_apis functions check the command-line arguments to make sure no
   // runtime API keys have been specified by the environment. Unfortunately, we
   // neither launch Chromium nor have a command line, so we need to prevent
   // them from DCHECKing out when they go looking.
   base::CommandLine::Init(0, nullptr);
 
   // Create the singleton now so that the Chromoting threads will be set up.
   remoting::ChromotingJniRuntime::GetInstance();
 }
@@ skipping 312 matching lines @@
 
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_JniInterface_redrawGraphicsInternal(env);
 }
 
 void ChromotingJniRuntime::DetachFromVmAndSignal(base::WaitableEvent* waiter) {
   base::android::DetachFromVM();
   waiter->Signal();
 }
 }  // namespace remoting