[Isolates] Merge from bleeding_edge to isolates, revisions 6100-6300.

src/factory.cc

Index: src/factory.cc
===================================================================
--- src/factory.cc	(revision 6941)
+++ src/factory.cc	(working copy)
@@ -111,7 +111,19 @@
                      String);
 }
 
+Handle<String> Factory::LookupAsciiSymbol(Vector<const char> string) {
+  CALL_HEAP_FUNCTION(isolate(),
+                     isolate()->heap()->LookupAsciiSymbol(string),
+                     String);
+}
 
+Handle<String> Factory::LookupTwoByteSymbol(Vector<const uc16> string) {
+  CALL_HEAP_FUNCTION(isolate(),
+                     isolate()->heap()->LookupTwoByteSymbol(string),
+                     String);
+}
+
+
 Handle<String> Factory::NewStringFromAscii(Vector<const char> string,
                                            PretenureFlag pretenure) {
   CALL_HEAP_FUNCTION(