Revert of Move core web_view code to extensions.

chrome/browser/guest_view/web_view/web_view_permission_helper.cc

+// Copyright 2014 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/guest_view/web_view/web_view_permission_helper.h"
+
+#include "chrome/browser/guest_view/web_view/chrome_web_view_permission_helper_delegate.h"
+#include "chrome/browser/guest_view/web_view/web_view_constants.h"
+#include "chrome/browser/guest_view/web_view/web_view_guest.h"
+#include "chrome/browser/guest_view/web_view/web_view_permission_types.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/user_metrics.h"
+#include "extensions/browser/guest_view/web_view/web_view_permission_helper_delegate.h"
+
+using content::BrowserPluginGuestDelegate;
+using content::RenderViewHost;
+
+namespace extensions {
+
+namespace {
+static std::string PermissionTypeToString(WebViewPermissionType type) {
+  switch (type) {
+    case WEB_VIEW_PERMISSION_TYPE_DOWNLOAD:
+      return webview::kPermissionTypeDownload;
+    case WEB_VIEW_PERMISSION_TYPE_FILESYSTEM:
+      return webview::kPermissionTypeFileSystem;
+    case WEB_VIEW_PERMISSION_TYPE_GEOLOCATION:
+      return webview::kPermissionTypeGeolocation;
+    case WEB_VIEW_PERMISSION_TYPE_JAVASCRIPT_DIALOG:
+      return webview::kPermissionTypeDialog;
+    case WEB_VIEW_PERMISSION_TYPE_LOAD_PLUGIN:
+      return webview::kPermissionTypeLoadPlugin;
+    case WEB_VIEW_PERMISSION_TYPE_MEDIA:
+      return webview::kPermissionTypeMedia;
+    case WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW:
+      return webview::kPermissionTypeNewWindow;
+    case WEB_VIEW_PERMISSION_TYPE_POINTER_LOCK:
+      return webview::kPermissionTypePointerLock;
+    default:
+      NOTREACHED();
+      return std::string();
+  }
+}
+
+// static
+void RecordUserInitiatedUMA(
+    const WebViewPermissionHelper::PermissionResponseInfo& info,
+    bool allow) {
+  if (allow) {
+    // Note that |allow| == true means the embedder explicitly allowed the
+    // request. For some requests they might still fail. An example of such
+    // scenario would be: an embedder allows geolocation request but doesn't
+    // have geolocation access on its own.
+    switch (info.permission_type) {
+      case WEB_VIEW_PERMISSION_TYPE_DOWNLOAD:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.Download"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_FILESYSTEM:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.FileSystem"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_GEOLOCATION:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.Geolocation"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_JAVASCRIPT_DIALOG:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.JSDialog"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_LOAD_PLUGIN:
+        content::RecordAction(
+            UserMetricsAction("WebView.Guest.PermissionAllow.PluginLoad"));
+      case WEB_VIEW_PERMISSION_TYPE_MEDIA:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.Media"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW:
+        content::RecordAction(
+            UserMetricsAction("BrowserPlugin.PermissionAllow.NewWindow"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_POINTER_LOCK:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionAllow.PointerLock"));
+        break;
+      default:
+        break;
+    }
+  } else {
+    switch (info.permission_type) {
+      case WEB_VIEW_PERMISSION_TYPE_DOWNLOAD:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.Download"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_FILESYSTEM:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.FileSystem"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_GEOLOCATION:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.Geolocation"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_JAVASCRIPT_DIALOG:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.JSDialog"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_LOAD_PLUGIN:
+        content::RecordAction(
+            UserMetricsAction("WebView.Guest.PermissionDeny.PluginLoad"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_MEDIA:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.Media"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW:
+        content::RecordAction(
+            UserMetricsAction("BrowserPlugin.PermissionDeny.NewWindow"));
+        break;
+      case WEB_VIEW_PERMISSION_TYPE_POINTER_LOCK:
+        content::RecordAction(
+            UserMetricsAction("WebView.PermissionDeny.PointerLock"));
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+} // namespace
+
+WebViewPermissionHelper::WebViewPermissionHelper(WebViewGuest* web_view_guest)
+  : content::WebContentsObserver(web_view_guest->guest_web_contents()),
+    next_permission_request_id_(guestview::kInstanceIDNone),
+    web_view_guest_(web_view_guest),
+    weak_factory_(this) {
+      // TODO(hanxi) : Create the delegate through ExtensionsAPIClient after
+      // moving WebViewPermissionHelper to extensions.
+      web_view_permission_helper_delegate_.reset(
+          new ChromeWebViewPermissionHelperDelegate(this));
+}
+
+WebViewPermissionHelper::~WebViewPermissionHelper() {
+}
+
+// static
+WebViewPermissionHelper* WebViewPermissionHelper::FromFrameID(
+    int render_process_id,
+    int render_frame_id) {
+  WebViewGuest* web_view_guest = WebViewGuest::FromFrameID(
+      render_process_id, render_frame_id);
+  if (!web_view_guest) {
+    return NULL;
+  }
+  return web_view_guest->web_view_permission_helper_.get();
+}
+
+// static
+WebViewPermissionHelper* WebViewPermissionHelper::FromWebContents(
+      content::WebContents* web_contents) {
+  WebViewGuest* web_view_guest = WebViewGuest::FromWebContents(web_contents);
+  if (!web_view_guest)
+      return NULL;
+  return web_view_guest->web_view_permission_helper_.get();
+}
+
+#if defined(ENABLE_PLUGINS)
+bool WebViewPermissionHelper::OnMessageReceived(
+    const IPC::Message& message,
+    content::RenderFrameHost* render_frame_host) {
+  return web_view_permission_helper_delegate_->OnMessageReceived(
+      message, render_frame_host);
+}
+
+bool WebViewPermissionHelper::OnMessageReceived(const IPC::Message& message) {
+  return web_view_permission_helper_delegate_->OnMessageReceived(message);
+}
+#endif  // defined(ENABLE_PLUGINS)
+
+void WebViewPermissionHelper::RequestMediaAccessPermission(
+    content::WebContents* source,
+    const content::MediaStreamRequest& request,
+    const content::MediaResponseCallback& callback) {
+  web_view_permission_helper_delegate_-> RequestMediaAccessPermission(
+      source, request, callback);
+}
+
+void WebViewPermissionHelper::CanDownload(
+    content::RenderViewHost* render_view_host,
+    const GURL& url,
+    const std::string& request_method,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_delegate_->CanDownload(
+      render_view_host, url, request_method, callback);
+}
+
+void WebViewPermissionHelper::RequestPointerLockPermission(
+    bool user_gesture,
+    bool last_unlocked_by_target,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_delegate_->RequestPointerLockPermission(
+      user_gesture, last_unlocked_by_target, callback);
+}
+
+void WebViewPermissionHelper::RequestGeolocationPermission(
+    int bridge_id,
+    const GURL& requesting_frame,
+    bool user_gesture,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_delegate_->RequestGeolocationPermission(
+      bridge_id, requesting_frame, user_gesture, callback);
+}
+
+void WebViewPermissionHelper::CancelGeolocationPermissionRequest(
+    int bridge_id) {
+  web_view_permission_helper_delegate_->CancelGeolocationPermissionRequest(
+      bridge_id);
+}
+
+void WebViewPermissionHelper::RequestFileSystemPermission(
+    const GURL& url,
+    bool allowed_by_default,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_delegate_->RequestFileSystemPermission(
+      url, allowed_by_default, callback);
+}
+
+void WebViewPermissionHelper::FileSystemAccessedAsync(int render_process_id,
+                                                      int render_frame_id,
+                                                      int request_id,
+                                                      const GURL& url,
+                                                      bool blocked_by_policy) {
+  web_view_permission_helper_delegate_->FileSystemAccessedAsync(
+      render_process_id, render_frame_id, request_id, url, blocked_by_policy);
+}
+
+void WebViewPermissionHelper::FileSystemAccessedSync(int render_process_id,
+                                                     int render_frame_id,
+                                                     const GURL& url,
+                                                     bool blocked_by_policy,
+                                                     IPC::Message* reply_msg) {
+  web_view_permission_helper_delegate_->FileSystemAccessedSync(
+      render_process_id, render_frame_id, url, blocked_by_policy, reply_msg);
+}
+
+int WebViewPermissionHelper::RequestPermission(
+    WebViewPermissionType permission_type,
+    const base::DictionaryValue& request_info,
+    const PermissionResponseCallback& callback,
+    bool allowed_by_default) {
+  // If there are too many pending permission requests then reject this request.
+  if (pending_permission_requests_.size() >=
+      webview::kMaxOutstandingPermissionRequests) {
+    // Let the stack unwind before we deny the permission request so that
+    // objects held by the permission request are not destroyed immediately
+    // after creation. This is to allow those same objects to be accessed again
+    // in the same scope without fear of use after freeing.
+    base::MessageLoop::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&PermissionResponseCallback::Run,
+                   base::Owned(new PermissionResponseCallback(callback)),
+                   allowed_by_default,
+                   std::string()));
+    return webview::kInvalidPermissionRequestID;
+  }
+
+  int request_id = next_permission_request_id_++;
+  pending_permission_requests_[request_id] =
+      PermissionResponseInfo(callback, permission_type, allowed_by_default);
+  scoped_ptr<base::DictionaryValue> args(request_info.DeepCopy());
+  args->SetInteger(webview::kRequestId, request_id);
+  switch (permission_type) {
+    case WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW: {
+      web_view_guest_->DispatchEventToEmbedder(
+          new GuestViewBase::Event(webview::kEventNewWindow, args.Pass()));
+      break;
+    }
+    case WEB_VIEW_PERMISSION_TYPE_JAVASCRIPT_DIALOG: {
+      web_view_guest_->DispatchEventToEmbedder(
+          new GuestViewBase::Event(webview::kEventDialog, args.Pass()));
+      break;
+    }
+    default: {
+      args->SetString(webview::kPermission,
+                      PermissionTypeToString(permission_type));
+      web_view_guest_->DispatchEventToEmbedder(new GuestViewBase::Event(
+          webview::kEventPermissionRequest,
+          args.Pass()));
+      break;
+    }
+  }
+  return request_id;
+}
+
+WebViewPermissionHelper::SetPermissionResult
+WebViewPermissionHelper::SetPermission(
+    int request_id,
+    PermissionResponseAction action,
+    const std::string& user_input) {
+  RequestMap::iterator request_itr =
+      pending_permission_requests_.find(request_id);
+
+  if (request_itr == pending_permission_requests_.end())
+    return SET_PERMISSION_INVALID;
+
+  const PermissionResponseInfo& info = request_itr->second;
+  bool allow = (action == ALLOW) ||
+      ((action == DEFAULT) && info.allowed_by_default);
+
+  info.callback.Run(allow, user_input);
+
+  // Only record user initiated (i.e. non-default) actions.
+  if (action != DEFAULT)
+    RecordUserInitiatedUMA(info, allow);
+
+  pending_permission_requests_.erase(request_itr);
+
+  return allow ? SET_PERMISSION_ALLOWED : SET_PERMISSION_DENIED;
+}
+
+void WebViewPermissionHelper::CancelPendingPermissionRequest(int request_id) {
+  RequestMap::iterator request_itr =
+      pending_permission_requests_.find(request_id);
+
+  if (request_itr == pending_permission_requests_.end())
+    return;
+
+  pending_permission_requests_.erase(request_itr);
+}
+
+WebViewPermissionHelper::PermissionResponseInfo::PermissionResponseInfo()
+    : permission_type(WEB_VIEW_PERMISSION_TYPE_UNKNOWN),
+      allowed_by_default(false) {
+}
+
+WebViewPermissionHelper::PermissionResponseInfo::PermissionResponseInfo(
+    const PermissionResponseCallback& callback,
+    WebViewPermissionType permission_type,
+    bool allowed_by_default)
+    : callback(callback),
+      permission_type(permission_type),
+      allowed_by_default(allowed_by_default) {
+}
+
+WebViewPermissionHelper::PermissionResponseInfo::~PermissionResponseInfo() {
+}
+
+}  // namespace extensions