Adds UMA to measure when the data reduction proxy via header is missing

components/data_reduction_proxy/browser/data_reduction_proxy_protocol_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h"
 
 #include <utility>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params_test_utils.h"
 #include "components/data_reduction_proxy/common/data_reduction_proxy_headers.h"
+#include "components/data_reduction_proxy/common/data_reduction_proxy_headers_test_utils.h"
 #include "net/base/completion_callback.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/load_flags.h"
 #include "net/base/network_delegate.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_transaction_test_util.h"
 #include "net/proxy/proxy_service.h"
 #include "net/socket/socket_test_util.h"
 #include "net/url_request/static_http_user_agent_settings.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using net::HttpResponseHeaders;
 using net::HostPortPair;
 using net::MockRead;
 using net::MockWrite;
 using net::ProxyRetryInfoMap;
 using net::ProxyService;
 using net::StaticSocketDataProvider;
 using net::TestDelegate;
 using net::URLRequest;
 using net::TestURLRequestContext;
 
 
-namespace {
-// Transform "normal"-looking headers (\n-separated) to the appropriate
-// input format for ParseRawHeaders (\0-separated).
-void HeadersToRaw(std::string* headers) {
-  std::replace(headers->begin(), headers->end(), '\n', '\0');
-  if (!headers->empty())
-    *headers += '\0';
-}
-
-} // namespace
-
-
 namespace data_reduction_proxy {
 
 // A test network delegate that exercises the bypass logic of the data
 // reduction proxy.
 class TestDataReductionProxyNetworkDelegate : public net::NetworkDelegate {
  public:
   TestDataReductionProxyNetworkDelegate(
       TestDataReductionProxyParams* test_params,
       DataReductionProxyBypassType* bypass_type)
       : net::NetworkDelegate(),
@@ skipping 850 matching lines @@
                         &other_proxy_info);
   EXPECT_FALSE(other_proxy_info.is_direct());
 
   OnResolveProxyHandler(url, load_flags, data_reduction_proxy_config,
                         empty_proxy_retry_info, &test_params,
                         &data_reduction_proxy_info);
   EXPECT_TRUE(data_reduction_proxy_info.is_direct());
 }
 
 }  // namespace data_reduction_proxy