Turn on file access checks on Win.

chrome/browser/browser.cc

Index: chrome/browser/browser.cc
===================================================================
--- chrome/browser/browser.cc	(revision 64981)
+++ chrome/browser/browser.cc	(working copy)
@@ -376,13 +376,19 @@
   window_ = BrowserWindow::CreateBrowserWindow(this);
 
 #if defined(OS_WIN)
-  // Set the app user model id for this application to that of the application
-  // name.  See http://crbug.com/7028.
-  win_util::SetAppIdForWindow(
-      type_ & TYPE_APP ?
-      ShellIntegration::GetAppId(UTF8ToWide(app_name_), profile_->GetPath()) :
-      ShellIntegration::GetChromiumAppId(profile_->GetPath()),
-      window()->GetNativeHandle());
+  {
+    // TODO: This might hit the disk
+    //   http://code.google.com/p/chromium/issues/detail?id=61638
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+
+    // Set the app user model id for this application to that of the application
+    // name.  See http://crbug.com/7028.
+    win_util::SetAppIdForWindow(
+        type_ & TYPE_APP ?
+        ShellIntegration::GetAppId(UTF8ToWide(app_name_), profile_->GetPath()) :
+        ShellIntegration::GetChromiumAppId(profile_->GetPath()),
+        window()->GetNativeHandle());
+  }
 #endif
 
   NotificationService::current()->Notify(