Remove AboutToNavigateRenderFrame, issue custom notification for DevTools.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 16e89ef367050c8467f2e46a5e5606bd5fa29da3..66a4f63dcbbdcee9069c08d3b3bc2a781a13f7ce 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -17,6 +17,7 @@
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/child_process_security_policy_impl.h"
+#include "content/browser/devtools/render_frame_devtools_agent_host.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
 #include "content/browser/frame_host/frame_mojo_shell.h"
@@ -1704,6 +1705,8 @@ void RenderFrameHostImpl::Navigate(
     // completing a RFH swap or unload handler.
     SetState(RenderFrameHostImpl::STATE_DEFAULT);
 
+    RenderFrameDevToolsAgentHost::OnBeforeNavigation(
+        frame_tree_node_->current_frame_host(), this);
     Send(new FrameMsg_Navigate(routing_id_, common_params, start_params,

[yurys, 2015/09/28 23:37:30]

Let's extract this into a method to avoid FrameMsg_Navigate being added without
a call to OnBeforeNavigation in the future.

[dgozman, 2015/10/01 20:15:26]

Done.

                                request_params));
   }
@@ -2108,6 +2111,8 @@ void RenderFrameHostImpl::SetNavigationsSuspended(
     DCHECK(!proceed_time.is_null());
     suspended_nav_params_->request_params.browser_navigation_start =
         proceed_time;
+    RenderFrameDevToolsAgentHost::OnBeforeNavigation(
+        frame_tree_node_->current_frame_host(), this);
     Send(new FrameMsg_Navigate(routing_id_,
                                suspended_nav_params_->common_params,
                                suspended_nav_params_->start_params,