Implement the skeleton of an android content shell.

content/browser/android/jni_helper.h

Index: content/browser/android/jni_helper.h
diff --git a/content/browser/android/jni_helper.h b/content/browser/android/jni_helper.h
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index 0000000000000000000000000000000000000000..3533dc6dda8cbcafe00544d37e3335bd46e28283
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+++ b/content/browser/android/jni_helper.h
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+// Copyright (c) 2012 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.
+
+#ifndef CONTENT_BROWSER_ANDROID_JNI_HELPER_H_
+#define CONTENT_BROWSER_ANDROID_JNI_HELPER_H_
+
+#include <jni.h>
+
+#include "base/android/scoped_java_ref.h"
+
+struct RegistrationMethod {
+  const char* name;
+  bool (*func)(JNIEnv* env);
+};
+
+// Manages WeakGlobalRef lifecycle.
+class JavaObjectWeakGlobalRef {
+ public:
+  JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj);
+  virtual ~JavaObjectWeakGlobalRef();
+
+  base::android::ScopedJavaLocalRef<jobject> get(JNIEnv* env) const;
+
+ private:
+  jweak obj_;
+
+  DISALLOW_COPY_AND_ASSIGN(JavaObjectWeakGlobalRef);
+};
+
+// Get the real object stored in the weak reference returned as a
+// ScopedJavaLocalRef.
+base::android::ScopedJavaLocalRef<jobject> GetRealObject(
+    JNIEnv* env, jobject obj);
+
+#endif  // CONTENT_BROWSER_ANDROID_JNI_HELPER_H_