diff --git a/brightray/browser/inspectable_web_contents_delegate.h b/brightray/browser/inspectable_web_contents_delegate.h
index 531b96e1755..b193bd459dd 100644
--- a/brightray/browser/inspectable_web_contents_delegate.h
+++ b/brightray/browser/inspectable_web_contents_delegate.h
@@ -23,6 +23,8 @@ class InspectableWebContentsDelegate {
   virtual void DevToolsAddFileSystem() {}
   virtual void DevToolsRemoveFileSystem(
       const std::string& file_system_path) {}
+  virtual void DevToolsOpened() {}
+  virtual void DevToolsClosed() {}
 
 #if defined(USE_X11)
   // Called when creating devtools window.
diff --git a/brightray/browser/inspectable_web_contents_impl.cc b/brightray/browser/inspectable_web_contents_impl.cc
index 832768a8967..e383bc545c0 100644
--- a/brightray/browser/inspectable_web_contents_impl.cc
+++ b/brightray/browser/inspectable_web_contents_impl.cc
@@ -301,6 +301,9 @@ void InspectableWebContentsImpl::LoadCompleted() {
   // If the devtools can dock, "SetIsDocked" will be called by devtools itself.
   if (!can_dock_)
     SetIsDocked(DispatchCallback(), false);
+
+  if (delegate_)
+    delegate_->DevToolsOpened();
 }
 
 void InspectableWebContentsImpl::SetInspectedPageBounds(const gfx::Rect& rect) {
@@ -506,6 +509,9 @@ void InspectableWebContentsImpl::WebContentsDestroyed() {
 
   for (const auto& pair : pending_requests_)
     delete pair.first;
+
+  if (delegate_)
+    delegate_->DevToolsClosed();
 }
 
 bool InspectableWebContentsImpl::AddMessageToConsole(