Interactive autofill: Handle Online Wallet being unavailable.

chrome/browser/autofill/wallet/wallet_client.h

 // Copyright (c) 2012 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_AUTOFILL_WALLET_WALLET_CLIENT_H_
 #define CHROME_BROWSER_AUTOFILL_WALLET_WALLET_CLIENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 95 matching lines @@
 
   // UpdateInstrument changes the instrument with id |instrument_id| with the
   // information in |billing_address|. Its primary use is for upgrading ZIP code
   // only addresses or those missing phone numbers. DO NOT change the name on
   // |billing_address| from the one returned by Online Wallet or this call will
   // fail.
   void UpdateInstrument(const std::string& instrument_id,
                         const Address& billing_address,
                         WalletClientObserver* observer);
 
+  // Whether there is a currently running request (i.e. |request_| != NULL).
+  bool HasRequestInProgress() const;
+
  private:
   // TODO(ahutter): Implement this.
   std::string GetRiskParams() { return ""; }
 
   enum RequestType {
     NO_PENDING_REQUEST,
     ACCEPT_LEGAL_DOCUMENTS,
     ENCRYPT_OTP,
     ESCROW_SENSITIVE_INFORMATION,
     GET_FULL_WALLET,
@@ skipping 31 matching lines @@
   // to be initiated as only one request may be running at a given time.
   RequestType request_type_;
 
   DISALLOW_COPY_AND_ASSIGN(WalletClient);
 };
 
 }  // namespace wallet
 
 #endif  // CHROME_BROWSER_AUTOFILL_WALLET_WALLET_CLIENT_H_