[iOS] Allow overriding icuctl.dat file location.

base/i18n/icu_util.cc

 // Copyright (c) 2012 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/i18n/icu_util.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include <string>
 
 #include "base/debug/alias.h"
 #include "base/files/file_path.h"
 #include "base/files/memory_mapped_file.h"
+#if defined(OS_IOS)
+#include "base/ios/ios_util.h"

[rohitrao (ping after 24h), 2016/01/08 17:47:05]

This should go between the OS_ANDROID and OS_MAC blocks below.

+#endif
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "build/build_config.h"
 #include "third_party/icu/source/common/unicode/putil.h"
 #include "third_party/icu/source/common/unicode/udata.h"
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 #include "third_party/icu/source/i18n/unicode/timezone.h"
 #endif
@@ skipping 91 matching lines @@
   wchar_t tmp_buffer2[_MAX_PATH] = {0};
   wcscpy_s(tmp_buffer2, data_path.value().c_str());
   debug::Alias(tmp_buffer2);
 #endif
 
 #else
   // Assume it is in the framework bundle's Resources directory.
   ScopedCFTypeRef<CFStringRef> data_file_name(
       SysUTF8ToCFStringRef(kIcuDataFileName));
   FilePath data_path = mac::PathForFrameworkBundleResource(data_file_name);
+#if defined(OS_IOS)
+  FilePath override_data_path = base::ios::FilePathOfEmbeddedICU();
+  if (!override_data_path.empty()) {
+    data_path = override_data_path;
+  }
+#endif  // !defined(OS_IOS)
   if (data_path.empty()) {
     LOG(ERROR) << kIcuDataFileName << " not found in bundle";
     return;
   }
 #endif  // !defined(OS_MACOSX)
   File file(data_path, File::FLAG_OPEN | File::FLAG_READ);
   if (file.IsValid()) {
     g_icudtl_pf = file.TakePlatformFile();
     g_icudtl_region = MemoryMappedFile::Region::kWholeFile;
   }
@@ skipping 128 matching lines @@
 #endif  // !defined(OS_NACL)
 
 void AllowMultipleInitializeCallsForTesting() {
 #if !defined(NDEBUG) && !defined(OS_NACL)
   g_check_called_once = false;
 #endif
 }
 
 }  // namespace i18n
 }  // namespace base