MacViews: Fixed BrowserViewTest.CloseWithTabsStartWithActive.

chrome/browser/ui/views/frame/browser_view.cc

Index: chrome/browser/ui/views/frame/browser_view.cc
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index 2eb4e5135e4df4ad6b7d16d114f9312699730ab9..6a4fde72c3cfcdf11791dc75b8fbf128e153ac26 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -71,6 +71,7 @@
 #include "chrome/browser/ui/views/extensions/bookmark_app_confirmation_view.h"
 #include "chrome/browser/ui/views/extensions/extension_keybinding_registry_views.h"
 #include "chrome/browser/ui/views/find_bar_host.h"
+#include "chrome/browser/ui/views/frame/browser_shutdown.h"
 #include "chrome/browser/ui/views/frame/browser_view_layout.h"
 #include "chrome/browser/ui/views/frame/browser_view_layout_delegate.h"
 #include "chrome/browser/ui/views/frame/contents_layout_manager.h"
@@ -1775,6 +1776,13 @@ void BrowserView::OnWidgetActivationChanged(views::Widget* widget,
   }
 }
 
+void BrowserView::OnWidgetDestroying(views::Widget* widget) {
+  // Destroy any remaining WebContents early on. Doing so may result in
+  // calling back to one of the Views/LayoutManagers or supporting classes of
+  // BrowserView. By destroying here we ensure all said classes are valid.
+  DestroyBrowserWebContents(browser());

[tapted, 2016/05/30 23:43:55]

BrowserFrameAsh::OnWindowDestroying() also calls this. If this is CL is right, I
think you can remove the override there so it's not invoked twice.

[kirr, 2016/05/31 12:11:44]

Done. Thanks.

+}
+
 void BrowserView::OnWindowBeginUserBoundsChange() {
   WebContents* web_contents = GetActiveWebContents();
   if (!web_contents)