Revert "Revert of [Android] Migrate javascript settings to a content setting from a pref. (patchset…

content/browser/android/content_settings.h

-// 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_CONTENT_SETTINGS_H_
-#define CONTENT_BROWSER_ANDROID_CONTENT_SETTINGS_H_
-
-#include <jni.h>
-
-#include "base/android/jni_weak_ref.h"
-#include "content/public/browser/web_contents_observer.h"
-
-namespace content {
-
-class ContentSettings : public WebContentsObserver {
- public:
-  ContentSettings(JNIEnv* env, jobject obj,
-                  WebContents* contents);
-
-  static bool RegisterContentSettings(JNIEnv* env);
-
-  bool GetJavaScriptEnabled(JNIEnv* env, jobject obj);
-
- private:
-  // Self-deletes when the underlying WebContents is destroyed.
-  ~ContentSettings() override;
-
-  // WebContentsObserver overrides:
-  void WebContentsDestroyed() override;
-
-  // The Java counterpart to this class.
-  JavaObjectWeakGlobalRef content_settings_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ANDROID_CONTENT_SETTINGS_H_