Adapt String::find method via StringUtil adapter. [v8 repo]

src/inspector/string-util.h

Index: src/inspector/string-util.h
diff --git a/src/inspector/string-util.h b/src/inspector/string-util.h
index 1936c11d0061c75bdf4867c007d61bb28f015ece..6f0e3d5ff50a34260674dacdd607b7eec88b3313 100644
--- a/src/inspector/string-util.h
+++ b/src/inspector/string-util.h
@@ -32,6 +32,12 @@ class StringUtil {
     return String::fromInteger(number);
   }
   static String fromDouble(double number) { return String::fromDouble(number); }
+  static size_t find(const String& s, const char* needle) {
+    return s.find(needle);
+  }
+  static size_t find(const String& s, const String& needle) {
+    return s.find(needle);
+  }
   static const size_t kNotFound = String::kNotFound;
   static void builderAppend(StringBuilder& builder, const String& s) {
     builder.append(s);