Do not use setDartFlags API as we're now passing flags by other means.

webkit/glue/webkit_glue.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/glue/webkit_glue.h"
 
 #if defined(OS_WIN)
 #include <objidl.h>
 #include <mlang.h>
 #elif defined(OS_POSIX) && !defined(OS_MACOSX)
@@ skipping 67 matching lines @@
 
 // Global variable used by the plugin quirk "die after unload".
 bool g_forcefully_terminate_plugin_process = false;
 
 void SetJavaScriptFlags(const std::string& str) {
 #if WEBKIT_USING_V8
   v8::V8::SetFlagsFromString(str.data(), static_cast<int>(str.size()));
 #endif
 }
 
-void SetDartFlags(const std::string& str) {
-#if WEBKIT_USING_DART
-  WebKit::setDartFlags(str.data(), static_cast<int>(str.size()));
-#endif
-}
-
 void EnableWebCoreLogChannels(const std::string& channels) {
   if (channels.empty())
     return;
   StringTokenizer t(channels, ", ");
   while (t.GetNext()) {
     WebKit::enableLogChannel(t.token().c_str());
   }
 }
 
 string16 DumpDocumentText(WebFrame* web_frame) {
@@ skipping 394 matching lines @@
 std::string GetInspectorProtocolVersion() {
   return WebDevToolsAgent::inspectorProtocolVersion().utf8();
 }
 
 bool IsInspectorProtocolVersionSupported(const std::string& version) {
   return WebDevToolsAgent::supportsInspectorProtocolVersion(
       WebString::fromUTF8(version));
 }
 
 } // namespace webkit_glue