Adding Navigation Throttles to DevTools

content/browser/frame_host/navigation_handle_impl.cc

 // Copyright 2015 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 "content/browser/frame_host/navigation_handle_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
+#include "content/browser/devtools/render_frame_devtools_agent_host.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/common/frame_messages.h"
 #include "content/common/resource_request_body_impl.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_client.h"
 #include "net/url_request/redirect_info.h"
@@ skipping 296 matching lines @@
   if (method_ == "POST")
     resource_request_body_ = resource_request_body;
   sanitized_referrer_ = sanitized_referrer;
   has_user_gesture_ = has_user_gesture;
   transition_ = transition;
   is_external_protocol_ = is_external_protocol;
 
   state_ = WILL_SEND_REQUEST;
   complete_callback_ = callback;
 
+  RegisterNavigationThrottles();
+
+  // Notify each throttle of the request.
+  NavigationThrottle::ThrottleCheckResult result = CheckWillStartRequest();
+
+  // If the navigation is not deferred, run the callback.
+  if (result != NavigationThrottle::DEFER)
+    RunCompleteCallback(result);
+}
+
+void NavigationHandleImpl::RegisterNavigationThrottles() {
   // Register the navigation throttles. The ScopedVector returned by
   // GetNavigationThrottles is not assigned to throttles_ directly because it
   // would overwrite any throttle previously added with
   // RegisterThrottleForTesting.
   ScopedVector<NavigationThrottle> throttles_to_register =
       GetContentClient()->browser()->CreateThrottlesForNavigation(this);
   if (throttles_to_register.size() > 0) {
     throttles_.insert(throttles_.end(), throttles_to_register.begin(),
                       throttles_to_register.end());
     throttles_to_register.weak_clear();
   }
-
-  // Notify each throttle of the request.
-  NavigationThrottle::ThrottleCheckResult result = CheckWillStartRequest();
-
-  // If the navigation is not deferred, run the callback.
-  if (result != NavigationThrottle::DEFER)
-    RunCompleteCallback(result);
+  std::unique_ptr<NavigationThrottle> devtools_throttle =
+      RenderFrameDevToolsAgentHost::GetThrottleForNavigation(this);
+  if (devtools_throttle)
+    throttles_.push_back(devtools_throttle.release());
 }
 
 void NavigationHandleImpl::WillRedirectRequest(
     const GURL& new_url,
     const std::string& new_method,
     const GURL& new_referrer_url,
     bool new_is_external_protocol,
     scoped_refptr<net::HttpResponseHeaders> response_headers,
     const ThrottleChecksFinishedCallback& callback) {
   // Update the navigation parameters.
@@ skipping 173 matching lines @@
   complete_callback_.Reset();
 
   if (!callback.is_null())
     callback.Run(result);
 
   // No code after running the callback, as it might have resulted in our
   // destruction.
 }
 
 }  // namespace content