mandoline: Fix ICU initialization.

base/i18n/icu_util.h

 // Copyright (c) 2011 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.
 
 #ifndef BASE_I18N_ICU_UTIL_H_
 #define BASE_I18N_ICU_UTIL_H_
 
 #include "base/files/memory_mapped_file.h"
 #include "base/i18n/base_i18n_export.h"
 #include "build/build_config.h"
 
 namespace base {
 namespace i18n {
 
 #if !defined(OS_NACL)
 // Call this function to load ICU's data tables for the current process.  This
 // function should be called before ICU is used.
 BASE_I18N_EXPORT bool InitializeICU();
 
+// Returns a raw PlatformFile to the caller. Each call to this function returns
+// a new file descriptor. The caller is responsible for closing this file when
+// done with it.
+BASE_I18N_EXPORT PlatformFile OpenIcuDataFile();

[jam, 2015/11/05 19:29:03]

nit: ICU for consistency with the rest of the file

+
 #if ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
+#if defined(OS_ANDROID)
 // Returns the PlatformFile and Region that was initialized by InitializeICU().
-// Use with InitializeICUWithFileDescriptor().
+// Use with InitializeICUWithFileDescriptor(). This handle can't be shared
+// within the same process.
 BASE_I18N_EXPORT PlatformFile GetIcuDataFileHandle(
     MemoryMappedFile::Region* out_region);
+#endif
 
 // Android and html_viewer use a file descriptor passed by browser process to
 // initialize ICU in render processes.
 BASE_I18N_EXPORT bool InitializeICUWithFileDescriptor(
     PlatformFile data_fd,
     const MemoryMappedFile::Region& data_region);
 #endif  // ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE
 #endif  // !defined(OS_NACL)
 
 // In a test binary, the call above might occur twice.
 BASE_I18N_EXPORT void AllowMultipleInitializeCallsForTesting();
 
 }  // namespace i18n
 }  // namespace base
 
 #endif  // BASE_I18N_ICU_UTIL_H_