Adding Navigation Throttles to DevTools

content/browser/frame_host/navigation_handle_impl.cc

Index: content/browser/frame_host/navigation_handle_impl.cc
diff --git a/content/browser/frame_host/navigation_handle_impl.cc b/content/browser/frame_host/navigation_handle_impl.cc
index d7dcbefabbf2f06121040f756c61a2c45587d524..33e97b7e940af163334503fc5dc980f2dc1e676c 100644
--- a/content/browser/frame_host/navigation_handle_impl.cc
+++ b/content/browser/frame_host/navigation_handle_impl.cc
@@ -7,6 +7,7 @@
 #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"
@@ -334,6 +335,10 @@ void NavigationHandleImpl::WillStartRequest(
                       throttles_to_register.end());
     throttles_to_register.weak_clear();
   }
+  std::unique_ptr<NavigationThrottle> devtools_throttle =
+      RenderFrameDevToolsAgentHost::GetThrottleForNavigation(this);
+  if (devtools_throttle)
+    throttles_.push_back(devtools_throttle.release());
 
   // Notify each throttle of the request.
   NavigationThrottle::ThrottleCheckResult result = CheckWillStartRequest();