Clean up Cloud Print API flow code.

chrome/browser/printing/cloud_print/gcd_api_flow.cc

Index: chrome/browser/printing/cloud_print/gcd_api_flow.cc
diff --git a/chrome/browser/printing/cloud_print/gcd_api_flow.cc b/chrome/browser/printing/cloud_print/gcd_api_flow.cc
index 2d41fb77dccc188098be61341bbfe25fddb65c55..f0e9ad6ef69dd6444c59e8ccc73f7f67ce7eaaca 100644
--- a/chrome/browser/printing/cloud_print/gcd_api_flow.cc
+++ b/chrome/browser/printing/cloud_print/gcd_api_flow.cc
@@ -23,12 +23,6 @@ net::URLFetcher::RequestType GCDApiFlow::Request::GetRequestType() {
   return net::URLFetcher::GET;
 }
 
-void GCDApiFlow::Request::GetUploadData(std::string* upload_type,
-                                        std::string* upload_data) {
-  *upload_type = std::string();
-  *upload_data = std::string();
-}
-
 std::unique_ptr<GCDApiFlow> GCDApiFlow::Create(
     net::URLRequestContextGetter* request_context,
     OAuth2TokenService* token_service,