Remove HttpAuth::Scheme enum in favor of a string.

net/http/http_auth_controller.cc

Index: net/http/http_auth_controller.cc
diff --git a/net/http/http_auth_controller.cc b/net/http/http_auth_controller.cc
index 1ab12adda7655dfc241fec54db51db9f0565f1dc..019f95b1431e0483dbcff05d14d3d1da1a112eb0 100644
--- a/net/http/http_auth_controller.cc
+++ b/net/http/http_auth_controller.cc
@@ -98,8 +98,10 @@ void HistogramAuthEvent(HttpAuthHandler* handler, AuthEvent auth_event) {
   DCHECK_EQ(first_thread, base::PlatformThread::CurrentId());
 #endif
 
-  HttpAuth::Scheme auth_scheme = handler->auth_scheme();
-  DCHECK(auth_scheme >= 0 && auth_scheme < HttpAuth::AUTH_SCHEME_MAX);
+  std::string auth_scheme = handler->auth_scheme();
+
+#if 0
+  // TODO(cbentzel): This would need to convert to string -> bucket conversion.
 
   // Record start and rejection events for authentication.
   //
@@ -147,6 +149,7 @@ void HistogramAuthEvent(HttpAuthHandler* handler, AuthEvent auth_event) {
   DCHECK(target_bucket >= 0 && target_bucket < kTargetBucketsEnd);
   UMA_HISTOGRAM_ENUMERATION("Net.HttpAuthTarget", target_bucket,
                             kTargetBucketsEnd);
+#endif
 }
 
 }  // namespace
@@ -503,7 +506,7 @@ void HttpAuthController::PopulateAuthChallenge() {
   auth_info_ = new AuthChallengeInfo;
   auth_info_->is_proxy = (target_ == HttpAuth::AUTH_PROXY);
   auth_info_->challenger = HostPortPair::FromURL(auth_origin_);
-  auth_info_->scheme = HttpAuth::SchemeToString(handler_->auth_scheme());
+  auth_info_->scheme = handler_->auth_scheme();
   auth_info_->realm = handler_->realm();
 }
 
@@ -553,14 +556,18 @@ scoped_refptr<AuthChallengeInfo> HttpAuthController::auth_info() {
   return auth_info_;
 }
 
-bool HttpAuthController::IsAuthSchemeDisabled(HttpAuth::Scheme scheme) const {
+bool HttpAuthController::IsAuthSchemeDisabled(const std::string& scheme) const {
   DCHECK(CalledOnValidThread());
-  return disabled_schemes_.find(scheme) != disabled_schemes_.end();
+  // TODO(cbentzel): Needed?
+  std::string lower_scheme = StringToLowerASCII(scheme);
+  return disabled_schemes_.find(lower_scheme) != disabled_schemes_.end();
 }
 
-void HttpAuthController::DisableAuthScheme(HttpAuth::Scheme scheme) {
+void HttpAuthController::DisableAuthScheme(const std::string& scheme) {
   DCHECK(CalledOnValidThread());
-  disabled_schemes_.insert(scheme);
+  // TODO(cbentzel): Needed?
+  std::string lower_scheme = StringToLowerASCII(scheme);
+  disabled_schemes_.insert(lower_scheme);
 }
 
 }  // namespace net