DevTools: Do not close devtools if there are dirty files in workspace

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index dab977c681456a56a9619729ec8bb6fbe5123e59..c34446a6080d9429cf9bb8d766cf88494190cd95 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -837,6 +837,13 @@ void Browser::UpdateDownloadShelfVisibility(bool visible) {
 ///////////////////////////////////////////////////////////////////////////////
 
 // static
+bool Browser::ShouldRunUnloadEventsHelper(content::WebContents* contents) {
+  if (IsFastTabUnloadEnabled())
+    return chrome::FastUnloadController::ShouldRunUnloadEventsHelper(contents);
+  return chrome::UnloadController::ShouldRunUnloadEventsHelper(contents);
+}
+
+// static
 bool Browser::RunUnloadEventsHelper(WebContents* contents) {
   if (IsFastTabUnloadEnabled())
     return chrome::FastUnloadController::RunUnloadEventsHelper(contents);
@@ -1435,6 +1442,10 @@ gfx::Rect Browser::GetRootWindowResizerRect() const {
 void Browser::BeforeUnloadFired(WebContents* web_contents,
                                 bool proceed,
                                 bool* proceed_to_fire_unload) {
+  if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
+        proceed, proceed_to_fire_unload))
+    return;
+
   if (IsFastTabUnloadEnabled()) {
     *proceed_to_fire_unload =
         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);