Added an event handler to the GAIA login page which closes the dialog when it...

chrome/browser/views/html_dialog_view.cc

Index: chrome/browser/views/html_dialog_view.cc
===================================================================
--- chrome/browser/views/html_dialog_view.cc	(revision 27254)
+++ chrome/browser/views/html_dialog_view.cc	(working copy)
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/views/html_dialog_view.h"
 
+#include "base/keyboard_codes.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "views/widget/root_view.h"
@@ -48,6 +49,13 @@
   return out;
 }
 
+bool HtmlDialogView::AcceleratorPressed(const views::Accelerator& accelerator) {
+  // Pressing ESC closes the dialog.
+  DCHECK_EQ(base::VKEY_ESCAPE, accelerator.GetKeyCode());
+  OnDialogClosed(std::string());
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // HtmlDialogView, views::WindowDelegate implementation:
 
@@ -216,5 +224,8 @@
   HtmlDialogUI::GetPropertyAccessor().SetProperty(tab_contents_->property_bag(),
                                                   this);
 
+  // Pressing the ESC key will close the dialog.
+  AddAccelerator(views::Accelerator(base::VKEY_ESCAPE, false, false, false));
+
   DOMView::LoadURL(delegate_->GetDialogContentURL());
 }