IWYU fixes for url/...

url/url_canon_icu_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 <stddef.h>
+#include <string.h>
+#include <string>
 
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/icu/source/common/unicode/ucnv.h"
+#include "unicode/urename.h"
+#include "unicode/utypes.h"
+#include "url/third_party/mozilla/url_parse.h"
 #include "url/url_canon.h"
 #include "url/url_canon_icu.h"
 #include "url/url_canon_stdstring.h"
 #include "url/url_test_utils.h"
 
 namespace url {
 
 using test_utils::WStringToUTF16;
 
 namespace {
@@ skipping 133 matching lines @@
   StdStringCanonOutput output(&out_str);
   Component out_comp;
   CanonicalizeQuery("a \x00z\x01", Component(0, 5), NULL, &output, &out_comp);
   output.Complete();
   EXPECT_EQ("?a%20%00z%01", out_str);
 }
 
 }  // namespace
 
 }  // namespace url