Rename ASSERT* to DCHECK*.

src/extensions/externalize-string-extension.cc

Index: src/extensions/externalize-string-extension.cc
diff --git a/src/extensions/externalize-string-extension.cc b/src/extensions/externalize-string-extension.cc
index c3b1ec756d9a25bcc54f293df075fe1cb7eb1c53..3f31249c543b857e304628676b26dce7d8baee7d 100644
--- a/src/extensions/externalize-string-extension.cc
+++ b/src/extensions/externalize-string-extension.cc
@@ -44,7 +44,7 @@ ExternalizeStringExtension::GetNativeFunctionTemplate(
     return v8::FunctionTemplate::New(isolate,
                                      ExternalizeStringExtension::Externalize);
   } else {
-    ASSERT(strcmp(*v8::String::Utf8Value(str), "isAsciiString") == 0);
+    DCHECK(strcmp(*v8::String::Utf8Value(str), "isAsciiString") == 0);
     return v8::FunctionTemplate::New(isolate,
                                      ExternalizeStringExtension::IsAscii);
   }