Chrome proxy refactoring.

chrome/service/cloud_print/cloud_print_url_fetcher.cc

Index: chrome/service/cloud_print/cloud_print_url_fetcher.cc
===================================================================
--- chrome/service/cloud_print/cloud_print_url_fetcher.cc	(revision 104911)
+++ chrome/service/cloud_print/cloud_print_url_fetcher.cc	(working copy)
@@ -15,11 +15,17 @@
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_request_status.h"
 
+const int kHTTPUnsupportedMediaType = 415;
+
 CloudPrintURLFetcher::CloudPrintURLFetcher()
     : delegate_(NULL),
       num_retries_(0) {
 }
 
+bool CloudPrintURLFetcher::IsSameRequest(const URLFetcher* source) {
+  return (request_.get() == source);
+}
+
 void CloudPrintURLFetcher::StartGetRequest(
     const GURL& url,
     Delegate* delegate,
@@ -68,15 +74,13 @@
                                                        response_code,
                                                        cookies,
                                                        data);
+
+  // If we get auth error, notify delegate and check if it wants to procceed.
+  if (action == CONTINUE_PROCESSING && RC_FORBIDDEN == response_code) {
+    action = delegate_->OnRequestAuthError();
+  }
+
   if (action == CONTINUE_PROCESSING) {
-    // If we are not using an OAuth token, and we got an auth error, we are
-    // done. Else, the token may have been refreshed. Let us try again.
-    if ((RC_FORBIDDEN == response_code) &&
-        (!CloudPrintTokenStore::current() ||
-         !CloudPrintTokenStore::current()->token_is_oauth())) {
-      delegate_->OnRequestAuthError();
-      return;
-    }
     // We need to retry on all network errors.
     if (!status.is_success() || (response_code != 200))
       action = RETRY_REQUEST;
@@ -108,6 +112,12 @@
     // be ignored.
     request_->ReceivedContentWasMalformed();
 
+    // If we receive error code from the server "Media Type Not Supported",
+    // there is no reasons to retry, request will never succeed.
+    // In that case we should call OnRequestGiveUp() right away.
+    if (response_code == kHTTPUnsupportedMediaType)
+      num_retries_ = source->max_retries();
+
     ++num_retries_;
     if ((-1 != source->max_retries()) &&
         (num_retries_ > source->max_retries())) {
@@ -139,8 +149,8 @@
   // Since we implement our own retry logic, disable the retry in URLFetcher.
   request_->set_automatically_retry_on_5xx(false);
   request_->set_max_retries(max_retries);
+  delegate_ = delegate;
   SetupRequestHeaders();
-  delegate_ = delegate;
   if (request_type == URLFetcher::POST) {
     request_->set_upload_data(post_data_mime_type, post_data);
   }
@@ -149,14 +159,9 @@
 }
 
 void CloudPrintURLFetcher::SetupRequestHeaders() {
-  std::string headers;
-  CloudPrintTokenStore* token_store = CloudPrintTokenStore::current();
-  if (token_store) {
-    headers = token_store->token_is_oauth() ?
-        "Authorization: OAuth " : "Authorization: GoogleLogin auth=";
-    headers += token_store->token();
+  std::string headers = delegate_->GetAuthHeader();
+  if (!headers.empty())
     headers += "\r\n";
-  }
   headers += kChromeCloudPrintProxyHeader;
   if (!additional_headers_.empty()) {
     headers += "\r\n";