Add support for multi-line GlobalError messages to Views.

chrome/browser/signin/signin_global_error.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_
 #define CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_
 
 #include <set>
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 36 matching lines @@
 
   GoogleServiceAuthError GetLastAuthError() const { return auth_error_; }
 
   // GlobalError implementation.
   virtual bool HasMenuItem() OVERRIDE;
   virtual int MenuItemCommandID() OVERRIDE;
   virtual string16 MenuItemLabel() OVERRIDE;
   virtual void ExecuteMenuItem(Browser* browser) OVERRIDE;
   virtual bool HasBubbleView() OVERRIDE;
   virtual string16 GetBubbleViewTitle() OVERRIDE;
-  virtual string16 GetBubbleViewMessage() OVERRIDE;
+  virtual std::vector<string16> GetBubbleViewMessages() OVERRIDE;
   virtual string16 GetBubbleViewAcceptButtonLabel() OVERRIDE;
   virtual string16 GetBubbleViewCancelButtonLabel() OVERRIDE;
   virtual void OnBubbleViewDidClose(Browser* browser) OVERRIDE;
   virtual void BubbleViewAcceptButtonPressed(Browser* browser) OVERRIDE;
   virtual void BubbleViewCancelButtonPressed(Browser* browser) OVERRIDE;
 
  private:
   std::set<const AuthStatusProvider*> provider_set_;
 
   // The auth error detected the last time AuthStatusChanged() was invoked (or
   // NONE if AuthStatusChanged() has never been invoked).
   GoogleServiceAuthError auth_error_;
 
   // The SigninManager that owns this object.
   SigninManager* signin_manager_;
 
   // The Profile this object belongs to.
   Profile* profile_;
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_GLOBAL_ERROR_H_