[icu] Support loading data file from default location

src/startup-data-util.cc

Index: src/startup-data-util.cc
diff --git a/src/startup-data-util.cc b/src/startup-data-util.cc
index 4e0ad97a0cf6cc67b02adab929d73199c0852043..3c50ea27e497c742c894ec9d6745b39147213c28 100644
--- a/src/startup-data-util.cc
+++ b/src/startup-data-util.cc
@@ -9,6 +9,7 @@
 
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
+#include "src/file-utils.h"
 #include "src/utils.h"
 
 
@@ -77,27 +78,6 @@ void LoadFromFiles(const char* natives_blob, const char* snapshot_blob) {
   atexit(&FreeStartupData);
 }
 
-
-char* RelativePath(char** buffer, const char* exec_path, const char* name) {
-  DCHECK(exec_path);
-  int path_separator = static_cast<int>(strlen(exec_path)) - 1;
-  while (path_separator >= 0 &&
-         !base::OS::isDirectorySeparator(exec_path[path_separator])) {
-    path_separator--;
-  }
-  if (path_separator >= 0) {
-    int name_length = static_cast<int>(strlen(name));
-    *buffer =
-        reinterpret_cast<char*>(calloc(path_separator + name_length + 2, 1));
-    *buffer[0] = '\0';
-    strncat(*buffer, exec_path, path_separator + 1);
-    strncat(*buffer, name, name_length);
-  } else {
-    *buffer = strdup(name);
-  }
-  return *buffer;
-}
-
 }  // namespace
 #endif  // V8_USE_EXTERNAL_STARTUP_DATA