net: remove GetNormalizedHeaders() function

net/http/http_cache_unittest.cc

Index: net/http/http_cache_unittest.cc
diff --git a/net/http/http_cache_unittest.cc b/net/http/http_cache_unittest.cc
index 60c7ed7c8d75d286465b15c12b4806d86acc6b87..bbf9b10f23df7c761400697724be49d977d48b6a 100644
--- a/net/http/http_cache_unittest.cc
+++ b/net/http/http_cache_unittest.cc
@@ -262,7 +262,8 @@ void RunTransactionTestWithResponse(HttpCache* cache,
                                     std::string* response_headers) {
   HttpResponseInfo response;
   RunTransactionTestWithResponseInfo(cache, trans_info, &response);
-  response.headers->GetNormalizedHeaders(response_headers);
+  *response_headers = HttpUtil::ConvertHeadersBackToHTTPResponse(
+      response.headers->raw_headers());
 }
 
 void RunTransactionTestWithResponseAndGetTiming(
@@ -275,7 +276,8 @@ void RunTransactionTestWithResponseAndGetTiming(
   RunTransactionTestBase(cache, trans_info, MockHttpRequest(trans_info),
                          &response, log, load_timing_info, nullptr, nullptr,
                          nullptr);
-  response.headers->GetNormalizedHeaders(response_headers);
+  *response_headers = HttpUtil::ConvertHeadersBackToHTTPResponse(
+      response.headers->raw_headers());
 }
 
 // This class provides a handler for kFastNoStoreGET_Transaction so that the
@@ -6706,8 +6708,8 @@ TEST(HttpCache, UpdatesRequestResponseTimeOn304) {
   EXPECT_EQ(response_time.ToInternalValue(),
             response.response_time.ToInternalValue());
 
-  std::string headers;
-  response.headers->GetNormalizedHeaders(&headers);
+  std::string headers = HttpUtil::ConvertHeadersBackToHTTPResponse(
+      response.headers->raw_headers());
 
   EXPECT_EQ("HTTP/1.1 200 OK\n"
             "Date: Wed, 22 Jul 2009 03:15:26 GMT\n"