Adding Navigation Throttles to DevTools

content/browser/devtools/render_frame_devtools_agent_host.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_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 #define CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 18 matching lines @@
 }  // namespace device
 #endif
 
 namespace content {
 
 class BrowserContext;
 class DevToolsFrameTraceRecorder;
 class DevToolsProtocolHandler;
 class FrameTreeNode;
 class NavigationHandle;
+class NavigationThrottle;
 class RenderFrameHostImpl;
 
 namespace devtools {
 namespace browser { class BrowserHandler; }
 namespace dom { class DOMHandler; }
 namespace emulation { class EmulationHandler; }
 namespace input { class InputHandler; }
 namespace inspector { class InspectorHandler; }
 namespace io { class IOHandler; }
 namespace network { class NetworkHandler; }
 namespace page { class PageHandler; }
 namespace security { class SecurityHandler; }
 namespace service_worker { class ServiceWorkerHandler; }
 namespace storage { class StorageHandler; }
 namespace tracing { class TracingHandler; }
 }
 
 class CONTENT_EXPORT RenderFrameDevToolsAgentHost
     : public DevToolsAgentHostImpl,
       private WebContentsObserver {
  public:
   static void AddAllAgentHosts(DevToolsAgentHost::List* result);
 
   static void OnCancelPendingNavigation(RenderFrameHost* pending,
                                         RenderFrameHost* current);
   static void OnBeforeNavigation(RenderFrameHost* current,
                                  RenderFrameHost* pending);
   static void OnBeforeNavigation(NavigationHandle* navigation_handle);
+  static std::unique_ptr<NavigationThrottle> CreateThrottleForNavigation(
+      NavigationHandle* navigation_handle);
 
   void SynchronousSwapCompositorFrame(
       cc::CompositorFrameMetadata frame_metadata);
 
   bool HasRenderFrameHost(RenderFrameHost* host);
 
   FrameTreeNode* frame_tree_node() { return frame_tree_node_; }
 
   // DevTooolsAgentHost overrides.
   void DisconnectWebContents() override;
@@ skipping 120 matching lines @@
 
   // The FrameTreeNode associated with this agent.
   FrameTreeNode* frame_tree_node_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameDevToolsAgentHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_