Block renderer-initiated main frame navigations to data URLs

content/browser/loader/async_resource_handler.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_LOADER_ASYNC_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_LOADER_ASYNC_RESOURCE_HANDLER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 45 matching lines @@
   void OnReadCompleted(int bytes_read,
                        std::unique_ptr<ResourceController> controller) override;
   void OnResponseCompleted(
       const net::URLRequestStatus& status,
       std::unique_ptr<ResourceController> controller) override;
   void OnDataDownloaded(int bytes_downloaded) override;
 
  private:
   class InliningHelper;
 
+  // Asynchronously called by OnResponseStarted. If |should_cancel| is true,
+  // cancels the resource load.
+  void OnResponseStartedInternal(ResourceResponse* response,
+                                 std::unique_ptr<ResourceController> controller,
+                                 bool should_cancel);
+
   // IPC message handlers:
   void OnFollowRedirect(int request_id);
   void OnDataReceivedACK(int request_id);
   void OnUploadProgressACK(int request_id);
 
   bool EnsureResourceBufferIsInitialized();
   void ResumeIfDeferred();
   void OnDefer(std::unique_ptr<ResourceController> controller);
   bool CheckForSufficientResource();
   int CalculateEncodedDataLengthToReport();
@@ skipping 26 matching lines @@
   std::unique_ptr<UploadProgressTracker> upload_progress_tracker_;
 
   int64_t reported_transfer_size_;
 
   DISALLOW_COPY_AND_ASSIGN(AsyncResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_ASYNC_RESOURCE_HANDLER_H_