Making window.focus()/blur() work only when there is a user gesture.

chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc

Index: chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc
diff --git a/chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc b/chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc
index 8bec35fc6ae5ea29eabeccbc8229c34bb2b37e1f..be32f7f7e1523a844e3acd1bf57c37134aa0e674 100644
--- a/chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc
+++ b/chrome/browser/dom_ui/html_dialog_tab_contents_delegate.cc
@@ -76,6 +76,11 @@ void HtmlDialogTabContentsDelegate::ActivateContents(TabContents* contents) {
   // this frame and we don't have a TabStripModel.
 }
 
+void HtmlDialogTabContentsDelegate::DeactivateContents(TabContents* contents) {
+  // We don't care about this notification (called when a user gesture triggers
+  // a call to window.blur()).
+}
+
 void HtmlDialogTabContentsDelegate::LoadingStateChanged(TabContents* source) {
   // We don't care about this notification.
 }