Fix even more crashes. To help identify remaining crashes now and in the future, I have made the ...

chrome/browser/chromeos/login/user_controller.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/user_controller.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/utf_string_conversions.h"
@@ skipping 56 matching lines @@
   }
 
   virtual views::View* GetInitiallyFocusedView() OVERRIDE {
     return view_;
   }
 
   virtual void OnWidgetActivated(bool active) OVERRIDE {
     controller_->OnWidgetActivated(active);
   }
 
+  virtual views::Widget* GetWidget() OVERRIDE {
+    return view_->GetWidget();
+  }
+  virtual const views::Widget* GetWidget() const OVERRIDE {
+    return view_->GetWidget();
+  }
+
  private:
   UserController* controller_;
 
   // View to give focus to on show.
   views::View* view_;
 
   DISALLOW_COPY_AND_ASSIGN(ControlsWidgetDelegate);
 };
 
 using login::kBorderSize;
@@ skipping 167 matching lines @@
   if (active) {
     delegate_->OnUserSelected(this);
     user_view_->SetRemoveButtonVisible(
         !is_new_user_ && !is_guest_ && !is_owner_);
   } else {
     user_view_->SetRemoveButtonVisible(false);
     delegate_->ClearErrors();
   }
 }
 
+views::Widget* UserController::GetWidget() {
+  return NULL;
+}
+
+const views::Widget* UserController::GetWidget() const {
+  return NULL;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // UserController, NewUserView::Delegate implementation:
 //
 void UserController::OnLogin(const std::string& username,
                              const std::string& password) {
   if (is_new_user_)
     user_.set_email(username);
 
   user_input_->EnableInputControls(false);
   StartThrobber();
@@ skipping 232 matching lines @@
 std::wstring UserController::GetNameTooltip() const {
   if (is_new_user_)
     return UTF16ToWide(l10n_util::GetStringUTF16(IDS_ADD_USER));
   else if (is_guest_)
     return UTF16ToWide(l10n_util::GetStringUTF16(IDS_GO_INCOGNITO_BUTTON));
   else
     return UTF8ToWide(user_.GetNameTooltip());
 }
 
 }  // namespace chromeos