Extensions: Delete WebRequestEventRouterDelegate.

This CL deletes WebRequestEventRouterDelegate and its implementation
ChromeExtensionWebRequestEventRouterDelegate. It's only method,
NotifyWebRequestWithheld is replaced with a method on the ExtensionsAPIClient.
This will make it easier to share the implementation with the Declarative Net
Request API.

This CL should have no behavior change.

BUG=809680

Change-Id: I696dbf8d3a34ae546342eb7ba98a1dd9e26fe3aa
Reviewed-on: https://chromium-review.googlesource.com/c/1256218
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595979}

chrome/browser/extensions/BUILD.gn

@@ -403,8 +403,6 @@ jumbo_static_library("extensions") {
     "api/web_navigation/web_navigation_api_constants.h",
     "api/web_navigation/web_navigation_api_helpers.cc",
     "api/web_navigation/web_navigation_api_helpers.h",
-    "api/web_request/chrome_extension_web_request_event_router_delegate.cc",
-    "api/web_request/chrome_extension_web_request_event_router_delegate.h",
     "api/web_view/chrome_web_view_internal_api.cc",
     "api/web_view/chrome_web_view_internal_api.h",
     "api/webrtc_audio_private/webrtc_audio_private_api.cc",

chrome/browser/extensions/api/chrome_extensions_api_client.cc

@@ -10,6 +10,7 @@
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/strings/string_util.h"
+#include "base/task/post_task.h"
 #include "build/build_config.h"
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 #include "chrome/browser/extensions/api/chrome_device_permissions_prompt.h"
@@ -23,8 +24,8 @@
 #include "chrome/browser/extensions/api/networking_cast_private/chrome_networking_cast_private_delegate.h"
 #include "chrome/browser/extensions/api/storage/managed_value_store_cache.h"
 #include "chrome/browser/extensions/api/storage/sync_value_store_cache.h"
-#include "chrome/browser/extensions/api/web_request/chrome_extension_web_request_event_router_delegate.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
+#include "chrome/browser/extensions/extension_action_runner.h"
 #include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/guest_view/app_view/chrome_app_view_guest_delegate.h"
 #include "chrome/browser/guest_view/chrome_guest_view_manager_delegate.h"
@@ -39,9 +40,13 @@
 #include "components/pdf/browser/pdf_web_contents_helper.h"
 #include "components/signin/core/browser/signin_header_helper.h"
 #include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
 #include "extensions/browser/api/virtual_keyboard_private/virtual_keyboard_delegate.h"
 #include "extensions/browser/api/web_request/web_request_info.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
 #include "extensions/browser/guest_view/web_view/web_view_permission_helper.h"
 #include "google_apis/gaia/gaia_urls.h"
@@ -139,6 +144,53 @@ bool ChromeExtensionsAPIClient::ShouldHideBrowserNetworkRequest(
   return is_sensitive_request;
 }
 
+void ChromeExtensionsAPIClient::NotifyWebRequestWithheld(
+    int render_process_id,
+    int render_frame_id,
+    const ExtensionId& extension_id) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+
+  auto notify_web_request_withheld_on_ui = [](int render_process_id,
+                                              int render_frame_id,
+                                              const ExtensionId& extension_id) {
+    DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+    // Track down the ExtensionActionRunner and the extension. Since this is
+    // asynchronous, we could hit a null anywhere along the path.
+    content::RenderFrameHost* rfh =
+        content::RenderFrameHost::FromID(render_process_id, render_frame_id);
+    if (!rfh)
+      return;
+    // We don't count subframe blocked actions as yet, since there's no way to
+    // surface this to the user. Ignore these (which is also what we do for
+    // content scripts).
+    if (rfh->GetParent())
+      return;
+    content::WebContents* web_contents =
+        content::WebContents::FromRenderFrameHost(rfh);
+    if (!web_contents)
+      return;
+    extensions::ExtensionActionRunner* runner =
+        extensions::ExtensionActionRunner::GetForWebContents(web_contents);
+    if (!runner)
+      return;
+
+    const extensions::Extension* extension =
+        extensions::ExtensionRegistry::Get(web_contents->GetBrowserContext())
+            ->enabled_extensions()
+            .GetByID(extension_id);
+    if (!extension)
+      return;
+
+    runner->OnWebRequestBlocked(extension);
+  };
+
+  base::PostTaskWithTraits(
+      FROM_HERE, {content::BrowserThread::UI},
+      base::BindOnce(std::move(notify_web_request_withheld_on_ui),
+                     render_process_id, render_frame_id, extension_id));
+}
+
 AppViewGuestDelegate* ChromeExtensionsAPIClient::CreateAppViewGuestDelegate()
     const {
   return new ChromeAppViewGuestDelegate();
@@ -173,11 +225,6 @@ WebViewPermissionHelperDelegate* ChromeExtensionsAPIClient::
   return new ChromeWebViewPermissionHelperDelegate(web_view_permission_helper);
 }
 
-std::unique_ptr<WebRequestEventRouterDelegate>
-ChromeExtensionsAPIClient::CreateWebRequestEventRouterDelegate() const {
-  return std::make_unique<ChromeExtensionWebRequestEventRouterDelegate>();
-}
-
 scoped_refptr<ContentRulesRegistry>
 ChromeExtensionsAPIClient::CreateContentRulesRegistry(
     content::BrowserContext* browser_context,

chrome/browser/extensions/api/chrome_extensions_api_client.h

@@ -34,6 +34,9 @@ class ChromeExtensionsAPIClient : public ExtensionsAPIClient {
                                 const std::string& header_name) const override;
   bool ShouldHideBrowserNetworkRequest(
       const WebRequestInfo& request) const override;
+  void NotifyWebRequestWithheld(int render_process_id,
+                                int render_frame_id,
+                                const ExtensionId& extension_id) override;
   AppViewGuestDelegate* CreateAppViewGuestDelegate() const override;
   ExtensionOptionsGuestDelegate* CreateExtensionOptionsGuestDelegate(
       ExtensionOptionsGuest* guest) const override;
@@ -47,8 +50,6 @@ class ChromeExtensionsAPIClient : public ExtensionsAPIClient {
       WebViewGuest* web_view_guest) const override;
   WebViewPermissionHelperDelegate* CreateWebViewPermissionHelperDelegate(
       WebViewPermissionHelper* web_view_permission_helper) const override;
-  std::unique_ptr<WebRequestEventRouterDelegate>
-  CreateWebRequestEventRouterDelegate() const override;
   scoped_refptr<ContentRulesRegistry> CreateContentRulesRegistry(
       content::BrowserContext* browser_context,
       RulesCacheDelegate* cache_delegate) const override;

extensions/browser/api/extensions_api_client.cc

@@ -7,7 +7,6 @@
 #include "base/logging.h"
 #include "extensions/browser/api/device_permissions_prompt.h"
 #include "extensions/browser/api/virtual_keyboard_private/virtual_keyboard_delegate.h"
-#include "extensions/browser/api/web_request/web_request_event_router_delegate.h"
 #include "extensions/browser/guest_view/extensions_guest_view_manager_delegate.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest_delegate.h"
 #include "extensions/browser/guest_view/web_view/web_view_permission_helper_delegate.h"
@@ -48,6 +47,11 @@ bool ExtensionsAPIClient::ShouldHideBrowserNetworkRequest(
   return false;
 }
 
+void ExtensionsAPIClient::NotifyWebRequestWithheld(
+    int render_process_id,
+    int render_frame_id,
+    const ExtensionId& extension_id) {}
+
 AppViewGuestDelegate* ExtensionsAPIClient::CreateAppViewGuestDelegate() const {
   return NULL;
 }
@@ -81,11 +85,6 @@ WebViewPermissionHelperDelegate* ExtensionsAPIClient::
   return new WebViewPermissionHelperDelegate(web_view_permission_helper);
 }
 
-std::unique_ptr<WebRequestEventRouterDelegate>
-ExtensionsAPIClient::CreateWebRequestEventRouterDelegate() const {
-  return nullptr;
-}
-
 scoped_refptr<ContentRulesRegistry>
 ExtensionsAPIClient::CreateContentRulesRegistry(
     content::BrowserContext* browser_context,

extensions/browser/api/extensions_api_client.h

@@ -15,6 +15,7 @@
 #include "extensions/browser/api/declarative_content/content_rules_registry.h"
 #include "extensions/browser/api/storage/settings_namespace.h"
 #include "extensions/common/api/clipboard.h"
+#include "extensions/common/extension_id.h"
 
 class GURL;
 
@@ -54,7 +55,6 @@ class SettingsObserver;
 class ValueStoreCache;
 class ValueStoreFactory;
 class VirtualKeyboardDelegate;
-class WebRequestEventRouterDelegate;
 struct WebRequestInfo;
 class WebViewGuest;
 class WebViewGuestDelegate;
@@ -100,6 +100,12 @@ class ExtensionsAPIClient {
   virtual bool ShouldHideBrowserNetworkRequest(
       const WebRequestInfo& request) const;
 
+  // Notifies that an extension failed to act on a network request because the
+  // access to request was withheld.
+  virtual void NotifyWebRequestWithheld(int render_process_id,
+                                        int render_frame_id,
+                                        const ExtensionId& extension_id);
+
   // Creates the AppViewGuestDelegate.
   virtual AppViewGuestDelegate* CreateAppViewGuestDelegate() const;
 
@@ -127,10 +133,6 @@ class ExtensionsAPIClient {
   CreateWebViewPermissionHelperDelegate(
       WebViewPermissionHelper* web_view_permission_helper) const;
 
-  // Creates a delegate for WebRequestEventRouter.
-  virtual std::unique_ptr<WebRequestEventRouterDelegate>
-  CreateWebRequestEventRouterDelegate() const;
-
   // TODO(wjmaclean): Remove this when (if) ContentRulesRegistry code moves
   // to extensions/browser/api.
   virtual scoped_refptr<ContentRulesRegistry> CreateContentRulesRegistry(

extensions/browser/api/web_request/BUILD.gn

@@ -21,7 +21,6 @@ source_set("web_request") {
     "web_request_api_helpers.h",
     "web_request_event_details.cc",
     "web_request_event_details.h",
-    "web_request_event_router_delegate.h",
     "web_request_info.cc",
     "web_request_info.h",
     "web_request_permissions.cc",

extensions/browser/api/web_request/web_request_api.cc

@@ -50,7 +50,6 @@
 #include "extensions/browser/api/web_request/web_request_api_constants.h"
 #include "extensions/browser/api/web_request/web_request_api_helpers.h"
 #include "extensions/browser/api/web_request/web_request_event_details.h"
-#include "extensions/browser/api/web_request/web_request_event_router_delegate.h"
 #include "extensions/browser/api/web_request/web_request_info.h"
 #include "extensions/browser/api/web_request/web_request_proxying_url_loader_factory.h"
 #include "extensions/browser/api/web_request/web_request_proxying_websocket.h"
@@ -897,9 +896,6 @@ ExtensionWebRequestEventRouter* ExtensionWebRequestEventRouter::GetInstance() {
 
 ExtensionWebRequestEventRouter::ExtensionWebRequestEventRouter()
     : request_time_tracker_(new ExtensionWebRequestTimeTracker) {
-  DCHECK(ExtensionsAPIClient::Get());
-  web_request_event_router_delegate_ =
-      ExtensionsAPIClient::Get()->CreateWebRequestEventRouterDelegate();
 }
 
 void ExtensionWebRequestEventRouter::RegisterRulesRegistry(
@@ -1743,9 +1739,9 @@ void ExtensionWebRequestEventRouter::GetMatchingListenersImpl(
               request->initiator);
 
       if (access != PermissionsData::PageAccess::kAllowed) {
-        if (access == PermissionsData::PageAccess::kWithheld &&
-            web_request_event_router_delegate_) {
-          web_request_event_router_delegate_->NotifyWebRequestWithheld(
+        if (access == PermissionsData::PageAccess::kWithheld) {
+          DCHECK(ExtensionsAPIClient::Get());
+          ExtensionsAPIClient::Get()->NotifyWebRequestWithheld(
               request->render_process_id, request->frame_id,
               listener->id.extension_id);
         }

extensions/browser/api/web_request/web_request_api.h

@@ -64,7 +64,6 @@ enum class WebRequestResourceType : uint8_t;
 
 class InfoMap;
 class WebRequestEventDetails;
-class WebRequestEventRouterDelegate;
 struct WebRequestInfo;
 class WebRequestRulesRegistry;
 
@@ -705,9 +704,6 @@ class ExtensionWebRequestEventRouter {
   std::map<RulesRegistryKey,
       scoped_refptr<extensions::WebRequestRulesRegistry> > rules_registries_;
 
-  std::unique_ptr<extensions::WebRequestEventRouterDelegate>
-      web_request_event_router_delegate_;
-
   DISALLOW_COPY_AND_ASSIGN(ExtensionWebRequestEventRouter);
 };