Add name inference for anonymous functions to facilitate debugging and profiling of JS code.

src/runtime.h

Index: src/runtime.h
diff --git a/src/runtime.h b/src/runtime.h
index 486ffb364aff03f8f91ad776f787220d1bf8f3e5..657e5c5d978eb2baf73780e9b67916f89c0a0c69 100644
--- a/src/runtime.h
+++ b/src/runtime.h
@@ -355,6 +355,8 @@ class Runtime : public AllStatic {
 
   static int StringMatch(Handle<String> sub, Handle<String> pat, int index);
 
+  static bool IsUpperCaseChar(uint16_t ch);
+
   // TODO(1240886): The following three methods are *not* handle safe,
   // but accept handle arguments. This seems fragile.
 
@@ -369,6 +371,10 @@ class Runtime : public AllStatic {
 
   static Object* GetObjectProperty(Handle<Object> object, Handle<Object> key);
 
+  // This function is used in FunctionNameUsing* tests.
+  static Object* FindSharedFunctionInfoInScript(Handle<Script> script,
+                                                int position);
+
   // Helper functions used stubs.
   static void PerformGC(Object* result);
 };