Cleanup of ScannerConstants, now named UnicodeCache.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index e8cd10208d1e7247bd91ad20934e5ec99632121e..a63651afbc61def37afdb432f694231f9548f3b6 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -783,7 +783,7 @@ class JsonParser BASE_EMBEDDED {
  private:
   JsonParser()
       : isolate_(Isolate::Current()),
-        scanner_(isolate_->scanner_constants()) { }
+        scanner_(isolate_->unicode_cache()) { }
   ~JsonParser() { }
 
   Isolate* isolate() { return isolate_; }