Update from https://crrev.com/311076

base/i18n/icu_util.h

Index: base/i18n/icu_util.h
diff --git a/base/i18n/icu_util.h b/base/i18n/icu_util.h
index b0a5dbcce6df01cf29bacb9d953692ba7b74d97c..5094cb0f1df538f85d19c47e36d7d6ea299d8582 100644
--- a/base/i18n/icu_util.h
+++ b/base/i18n/icu_util.h
@@ -5,12 +5,15 @@
 #ifndef BASE_I18N_ICU_UTIL_H_
 #define BASE_I18N_ICU_UTIL_H_
 
-#include "build/build_config.h"
+#include "base/files/memory_mapped_file.h"
 #include "base/i18n/base_i18n_export.h"
+#include "build/build_config.h"
 
 namespace base {
 namespace i18n {
 
+BASE_I18N_EXPORT extern const char kIcuDataFileName[];
+
 // 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();
@@ -18,7 +21,9 @@ BASE_I18N_EXPORT bool InitializeICU();
 #if defined(OS_ANDROID)
 // Android uses a file descriptor passed by browser process to initialize ICU
 // in render processes.
-BASE_I18N_EXPORT bool InitializeICUWithFileDescriptor(int data_fd);
+BASE_I18N_EXPORT bool InitializeICUWithFileDescriptor(
+    int data_fd,
+    base::MemoryMappedFile::Region data_region);
 #endif
 
 // In a test binary, the call above might occur twice.