Reduce the copying of string data between C++ and javascript in proxy_resolver_v8.cc.

net/proxy/proxy_resolver_perftest.cc

 // Copyright (c) 2009 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 "base/perftimer.h"
+#include "base/string_util.h"
 #include "net/base/mock_host_resolver.h"
 #include "net/proxy/proxy_resolver_js_bindings.h"
 #include "net/proxy/proxy_resolver_v8.h"
 #include "net/url_request/url_request_unittest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(OS_WIN)
 #include "net/proxy/proxy_resolver_winhttp.h"
 #elif defined(OS_MACOSX)
 #include "net/proxy/proxy_resolver_mac.h"
@@ skipping 143 matching lines @@
 
     // Try to read the file from disk.
     std::string file_contents;
     bool ok = file_util::ReadFileToString(path, &file_contents);
 
     // If we can't load the file from disk, something is misconfigured.
     LOG_IF(ERROR, !ok) << "Failed to read file: " << path.value();
     ASSERT_TRUE(ok);
 
     // Load the PAC script into the ProxyResolver.
-    int rv = resolver_->SetPacScriptByData(file_contents, NULL);
+    int rv = resolver_->SetPacScriptByData(ASCIIToUTF16(file_contents), NULL);
     EXPECT_EQ(net::OK, rv);
   }
 
   net::ProxyResolver* resolver_;
   std::string resolver_name_;
   scoped_refptr<HTTPTestServer> server_;
 };
 
 #if defined(OS_WIN)
 TEST(ProxyResolverPerfTest, ProxyResolverWinHttp) {
@@ skipping 10 matching lines @@
 #endif
 
 TEST(ProxyResolverPerfTest, ProxyResolverV8) {
   net::ProxyResolverJSBindings* js_bindings =
       net::ProxyResolverJSBindings::CreateDefault(new net::MockHostResolver);
 
   net::ProxyResolverV8 resolver(js_bindings);
   PacPerfSuiteRunner runner(&resolver, "ProxyResolverV8");
   runner.RunAllTests();
 }