Remove net & url small, iOS ICU alternatives, unit tests.

net/base/net_string_util_icu_alternatives_ios.mm

+// Copyright 2016 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/logging.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_piece.h"
+#include "net/base/net_string_util.h"
+
+namespace net {
+
+// This constant cannot be defined as const char[] because it is initialized
+// by base::kCodepageLatin1 (which is const char[]) in net_string_util_icu.cc.
+const char* const kCharsetLatin1 = "ISO-8859-1";
+
+bool ConvertToUtf8(const std::string& text,
+                   const char* charset,
+                   std::string* output) {
+  DCHECK(false) << "Not implemented yet.";
+  return false;
+}
+
+bool ConvertToUtf8AndNormalize(const std::string& text,
+                               const char* charset,
+                               std::string* output) {
+  DCHECK(false) << "Not implemented yet.";
+  return false;
+}
+
+bool ConvertToUTF16(const std::string& text,
+                    const char* charset,
+                    base::string16* output) {
+  DCHECK(false) << "Not implemented yet.";
+  return false;
+}
+
+bool ConvertToUTF16WithSubstitutions(const std::string& text,
+                                     const char* charset,
+                                     base::string16* output) {
+  DCHECK(false) << "Not implemented yet.";
+  return false;
+}
+
+}  // namespace net