[iOS] Allow overriding icuctl.dat file location.

base/i18n/icu_util.cc

Index: base/i18n/icu_util.cc
diff --git a/base/i18n/icu_util.cc b/base/i18n/icu_util.cc
index d7e45c3400d3419501f6feb70c6e7cae9e560ba4..70c8b65b419e1441cbf4f68dbdba363c4423cf41 100644
--- a/base/i18n/icu_util.cc
+++ b/base/i18n/icu_util.cc
@@ -13,6 +13,9 @@
 #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"
@@ -124,6 +127,12 @@ void LazyInitIcuDataFile() {
   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;