[SCRIP] Add parsing access_denied errors in OATF

Add access_denied parsing in Oauth2AccessTokenFetcherImpl. These
errors were being treated as SERVICE_UNAVAILABLE before. So this cl
keeps the same behavior.

Change-Id: I8c96ea82dc467908a3c54888355fbb80900b61c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6276509
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Tanmoy Mollik <triploblastic@google.com>
Cr-Commit-Position: refs/heads/main@{#1423161}

google_apis/gaia/oauth2_access_token_fetcher_impl.cc

@@ -95,6 +95,10 @@ OAuth2ResponseErrorToOAuth2Response(const std::string& error) {
     return OAuth2AccessTokenFetcherImpl::kAdminPolicyEnforced;
   }
 
+  if (error == "access_denied") {
+    return OAuth2AccessTokenFetcherImpl::kAccessDenied;
+  }
+
   return OAuth2AccessTokenFetcherImpl::kUnknownError;
 }
 
@@ -255,6 +259,7 @@ void OAuth2AccessTokenFetcherImpl::EndGetAccessToken(
 
     case kRateLimitExceeded:
     case kInternalFailure:
+    case kAccessDenied:
       // Transient error.
       error = GoogleServiceAuthError::FromServiceUnavailable(response_str);
       break;

google_apis/gaia/oauth2_access_token_fetcher_impl.h

@@ -61,7 +61,8 @@ class COMPONENT_EXPORT(GOOGLE_APIS) OAuth2AccessTokenFetcherImpl
     kRateLimitExceeded = 11,
     kInternalFailure = 12,
     kAdminPolicyEnforced = 13,
-    kMaxValue = kAdminPolicyEnforced,
+    kAccessDenied = 14,
+    kMaxValue = kAccessDenied,
   };
 
   OAuth2AccessTokenFetcherImpl(

google_apis/gaia/oauth2_access_token_fetcher_impl_unittest.cc

@@ -440,6 +440,9 @@ const OAuth2ErrorCodesTestParam kOAuth2ErrorCodesTable[] = {
     {"admin_policy_enforced", net::HTTP_BAD_REQUEST,
      OAuth2AccessTokenFetcherImpl::kAdminPolicyEnforced,
      GoogleServiceAuthError::SCOPE_LIMITED_UNRECOVERABLE_ERROR},
+    {"access_denied", net::HTTP_FORBIDDEN,
+     OAuth2AccessTokenFetcherImpl::kAccessDenied,
+     GoogleServiceAuthError::SERVICE_UNAVAILABLE},
     {"", net::HTTP_BAD_REQUEST,
      OAuth2AccessTokenFetcherImpl::kErrorUnexpectedFormat,
      GoogleServiceAuthError::SERVICE_ERROR},

tools/metrics/histograms/enums.xml

@@ -21003,6 +21003,7 @@ Called by update_net_error_codes.py.-->
   <int value="11" label="Rate Limit Exceeded"/>
   <int value="12" label="Internal Failure"/>
   <int value="13" label="Admin Policy Enforced"/>
+  <int value="14" label="Access Denied"/>
 </enum>
 
 <enum name="OCRClientType">