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

content/browser/android/content_settings.cc

-// 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.
-
-#include "content/browser/android/content_settings.h"
-
-#include "base/android/jni_android.h"
-#include "content/browser/android/content_view_core_impl.h"
-#include "content/browser/renderer_host/render_view_host_delegate.h"
-#include "content/browser/renderer_host/render_view_host_impl.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/common/web_preferences.h"
-#include "jni/ContentSettings_jni.h"
-
-namespace content {
-
-ContentSettings::ContentSettings(JNIEnv* env,
-                         jobject obj,
-                         WebContents* contents)
-    : WebContentsObserver(contents),
-      content_settings_(env, obj) {
-}
-
-ContentSettings::~ContentSettings() {
-  JNIEnv* env = base::android::AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj = content_settings_.get(env);
-  if (obj.obj()) {
-    Java_ContentSettings_onNativeContentSettingsDestroyed(env, obj.obj(),
-        reinterpret_cast<intptr_t>(this));
-  }
-}
-
-// static
-bool ContentSettings::RegisterContentSettings(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-bool ContentSettings::GetJavaScriptEnabled(JNIEnv* env, jobject obj) {
-  RenderViewHost* render_view_host = web_contents()->GetRenderViewHost();
-  if (!render_view_host)
-    return false;
-  return render_view_host->GetWebkitPreferences().javascript_enabled;
-}
-
-void ContentSettings::WebContentsDestroyed() {
-  delete this;
-}
-
-static jlong Init(JNIEnv* env, jobject obj, jlong nativeContentViewCore) {
-  WebContents* web_contents =
-      reinterpret_cast<ContentViewCoreImpl*>(nativeContentViewCore)
-          ->GetWebContents();
-  ContentSettings* content_settings =
-      new ContentSettings(env, obj, web_contents);
-  return reinterpret_cast<intptr_t>(content_settings);
-}
-
-}  // namespace content