diff --git a/cef3/libcef/browser/browser_host_impl.cc b/cef3/libcef/browser/browser_host_impl.cc
index 19f1080a4..3e4bba3fa 100644
--- a/cef3/libcef/browser/browser_host_impl.cc
+++ b/cef3/libcef/browser/browser_host_impl.cc
@@ -1270,6 +1270,9 @@ void CefBrowserHostImpl::SendCommand(
 
   // Execute on the UI thread because CefResponseManager is not thread safe.
   if (CEF_CURRENTLY_ON_UIT()) {
+    TRACE_EVENT2("libcef", "CefBrowserHostImpl::SendCommand",
+                 "frame_id", frame_id,
+                 "needsResponse", responseHandler.get() ? 1 : 0);
     Cef_Request_Params params;
     params.name = "execute-command";
     params.frame_id = frame_id;
@@ -1307,6 +1310,9 @@ void CefBrowserHostImpl::SendCode(
 
   // Execute on the UI thread because CefResponseManager is not thread safe.
   if (CEF_CURRENTLY_ON_UIT()) {
+    TRACE_EVENT2("libcef", "CefBrowserHostImpl::SendCommand",
+                 "frame_id", frame_id,
+                 "needsResponse", responseHandler.get() ? 1 : 0);
     Cef_Request_Params params;
     params.name = "execute-code";
     params.frame_id = frame_id;
diff --git a/cef3/libcef/browser/render_widget_host_view_osr.cc b/cef3/libcef/browser/render_widget_host_view_osr.cc
index 21998775f..17ea47658 100644
--- a/cef3/libcef/browser/render_widget_host_view_osr.cc
+++ b/cef3/libcef/browser/render_widget_host_view_osr.cc
@@ -181,6 +181,7 @@ void CefRenderWidgetHostViewOSR::Blur() {
 }
 
 void CefRenderWidgetHostViewOSR::UpdateCursor(const WebCursor& cursor) {
+  TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::UpdateCursor");
   if (!browser_impl_.get())
     return;
 #if defined(OS_WIN)
@@ -408,6 +409,7 @@ void CefRenderWidgetHostViewOSR::SetBackground(const SkBitmap& background) {
 
 void CefRenderWidgetHostViewOSR::Invalidate(const gfx::Rect& rect,
     CefBrowserHost::PaintElementType type) {
+  TRACE_EVENT1("libcef", "CefRenderWidgetHostViewOSR::Invalidate", "type", type); 
   if (!IsPopupWidget() && type == PET_POPUP) {
     if (popup_host_view_)
       popup_host_view_->Invalidate(rect, type);
@@ -420,6 +422,7 @@ void CefRenderWidgetHostViewOSR::Invalidate(const gfx::Rect& rect,
 
 void CefRenderWidgetHostViewOSR::Paint(
     const std::vector<gfx::Rect>& copy_rects) {
+  TRACE_EVENT1("libcef", "CefRenderWidgetHostViewOSR::Paint", "rects", copy_rects.size()); 
   if (about_to_validate_and_paint_ ||
       !browser_impl_.get() ||
       !render_widget_host_) {
@@ -563,6 +566,7 @@ void CefRenderWidgetHostViewOSR::set_parent_host_view(
 
 void CefRenderWidgetHostViewOSR::SendKeyEvent(
     const content::NativeWebKeyboardEvent& event) {
+  TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendKeyEvent");
   if (!render_widget_host_)
     return;
   render_widget_host_->ForwardKeyboardEvent(event);
@@ -570,6 +574,7 @@ void CefRenderWidgetHostViewOSR::SendKeyEvent(
 
 void CefRenderWidgetHostViewOSR::SendMouseEvent(
     const WebKit::WebMouseEvent& event) {
+  TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendMouseEvent");
   if (!IsPopupWidget() && popup_host_view_) {
     if (popup_host_view_->popup_position_.Contains(event.x, event.y)) {
       WebKit::WebMouseEvent popup_event(event);
@@ -589,6 +594,7 @@ void CefRenderWidgetHostViewOSR::SendMouseEvent(
 
 void CefRenderWidgetHostViewOSR::SendMouseWheelEvent(
     const WebKit::WebMouseWheelEvent& event) {
+  TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::SendMouseWheelEvent");
   if (!IsPopupWidget() && popup_host_view_) {
     if (popup_host_view_->popup_position_.Contains(event.x, event.y)) {
       WebKit::WebMouseWheelEvent popup_event(event);
@@ -609,6 +615,7 @@ void CefRenderWidgetHostViewOSR::SendMouseWheelEvent(
 }
 
 void CefRenderWidgetHostViewOSR::OnScreenInfoChanged() {
+  TRACE_EVENT0("libcef", "CefRenderWidgetHostViewOSR::OnScreenInfoChanged");
   if (!render_widget_host_)
     return;
 
diff --git a/cef3/libcef/common/response_manager.cc b/cef3/libcef/common/response_manager.cc
index b6c5d14c8..b7f6efcb7 100644
--- a/cef3/libcef/common/response_manager.cc
+++ b/cef3/libcef/common/response_manager.cc
@@ -19,6 +19,7 @@ int CefResponseManager::GetNextRequestId() {
 int CefResponseManager::RegisterHandler(CefRefPtr<Handler> handler) {
   DCHECK(CalledOnValidThread());
   int request_id = GetNextRequestId();
+  TRACE_EVENT_ASYNC_BEGIN1("libcef", "CefResponseManager::Handler", request_id, "request_id", request_id);
   handlers_.insert(std::make_pair(request_id, handler));
   return request_id;
 }
@@ -28,10 +29,13 @@ bool CefResponseManager::RunHandler(const Cef_Response_Params& params) {
   DCHECK_GT(params.request_id, 0);
   HandlerMap::iterator it = handlers_.find(params.request_id);
   if (it != handlers_.end()) {
+    TRACE_EVENT0("libcef", "CefResponseManager::RunHandler");
     it->second->OnResponse(params);
     handlers_.erase(it);
+    TRACE_EVENT_ASYNC_END1("libcef", "CefResponseManager::Handler", params.request_id, "success", 1);
     return true;
   }
+  TRACE_EVENT_ASYNC_END1("libcef", "CefResponseManager::Handler", params.request_id, "success", 0);
   return false;
 }
 
diff --git a/cef3/libcef/renderer/browser_impl.cc b/cef3/libcef/renderer/browser_impl.cc
index da3de4d36..ba03dea2e 100644
--- a/cef3/libcef/renderer/browser_impl.cc
+++ b/cef3/libcef/renderer/browser_impl.cc
@@ -586,6 +586,10 @@ void CefBrowserImpl::OnRequest(const Cef_Request_Params& params) {
   std::string response;
   bool expect_response_ack = false;
 
+  TRACE_EVENT2("libcef", "CefBrowserImpl::OnRequest",
+               "request_id", params.request_id,
+               "expect_response", params.expect_response ? 1 : 0);
+
   if (params.user_initiated) {
     // Give the user a chance to handle the request.
     CefRefPtr<CefApp> app = CefContentClient::Get()->application();