Move navigation interception component to content/components

chrome/browser/component/navigation_interception/intercept_navigation_delegate.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 "chrome/browser/component/navigation_interception/intercept_navigation_delegate.h"
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_string.h"
-#include "base/callback.h"
-#include "chrome/browser/component/navigation_interception/intercept_navigation_resource_throttle.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/web_contents.h"
-#include "googleurl/src/gurl.h"
-#include "jni/InterceptNavigationDelegate_jni.h"
-#include "net/url_request/url_request.h"
-
-using base::android::ConvertUTF8ToJavaString;
-using base::android::ScopedJavaLocalRef;
-using content::BrowserThread;
-using content::RenderViewHost;
-using content::WebContents;
-
-namespace navigation_interception {
-
-namespace {
-
-const void* kInterceptNavigationDelegateUserDataKey =
-    &kInterceptNavigationDelegateUserDataKey;
-
-bool CheckIfShouldIgnoreNavigationOnUIThread(RenderViewHost* source,
-                                             const GURL& url,
-                                             const content::Referrer& referrer,
-                                             bool has_user_gesture) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(source);
-
-  WebContents* web_contents = WebContents::FromRenderViewHost(source);
-  if (!web_contents)
-    return false;
-  InterceptNavigationDelegate* intercept_navigation_delegate =
-      InterceptNavigationDelegate::Get(web_contents);
-  if (!intercept_navigation_delegate)
-    return false;
-
-  return intercept_navigation_delegate->ShouldIgnoreNavigation(
-      url, has_user_gesture);
-}
-
-} // namespace
-
-// static
-void InterceptNavigationDelegate::Associate(
-    WebContents* web_contents,
-    scoped_ptr<InterceptNavigationDelegate> delegate) {
-  web_contents->SetUserData(kInterceptNavigationDelegateUserDataKey,
-                            delegate.release());
-}
-
-// static
-InterceptNavigationDelegate* InterceptNavigationDelegate::Get(
-    WebContents* web_contents) {
-  return reinterpret_cast<InterceptNavigationDelegate*>(
-      web_contents->GetUserData(kInterceptNavigationDelegateUserDataKey));
-}
-
-// static
-content::ResourceThrottle* InterceptNavigationDelegate::CreateThrottleFor(
-    net::URLRequest* request) {
-  return new InterceptNavigationResourceThrottle(
-      request, base::Bind(&CheckIfShouldIgnoreNavigationOnUIThread));
-}
-
-InterceptNavigationDelegate::InterceptNavigationDelegate(
-    JNIEnv* env, jobject jdelegate)
-    : weak_jdelegate_(env, jdelegate) {
-}
-
-InterceptNavigationDelegate::~InterceptNavigationDelegate() {
-}
-
-bool InterceptNavigationDelegate::ShouldIgnoreNavigation(
-    const GURL& url,
-    bool has_user_gesture) {
-  if (!url.is_valid())
-    return false;
-
-  JNIEnv* env = base::android::AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> jdelegate = weak_jdelegate_.get(env);
-
-  if (jdelegate.is_null())
-    return false;
-
-  ScopedJavaLocalRef<jstring> jstring_url =
-      ConvertUTF8ToJavaString(env, url.spec());
-  return Java_InterceptNavigationDelegate_shouldIgnoreNavigation(
-      env,
-      jdelegate.obj(),
-      jstring_url.obj(),
-      has_user_gesture);
-}
-
-// Register native methods.
-
-bool RegisterInterceptNavigationDelegate(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-} // namespace navigation_interception