Rename ascii to one-byte where applicable.

src/global-handles.cc

Index: src/global-handles.cc
diff --git a/src/global-handles.cc b/src/global-handles.cc
index 35b577e35a1857b086dda8f31635e0582a0d08ef..282ca2d5d86a63d86dd00b1eb4b43888c3289e6b 100644
--- a/src/global-handles.cc
+++ b/src/global-handles.cc
@@ -235,8 +235,8 @@ class GlobalHandles::Node {
     {
       // Check that we are not passing a finalized external string to
       // the callback.
-      DCHECK(!object_->IsExternalAsciiString() ||
-             ExternalAsciiString::cast(object_)->resource() != NULL);
+      DCHECK(!object_->IsExternalOneByteString() ||
+             ExternalOneByteString::cast(object_)->resource() != NULL);
       DCHECK(!object_->IsExternalTwoByteString() ||
              ExternalTwoByteString::cast(object_)->resource() != NULL);
       // Leaving V8.