Use the tonic namespace for tonic + resulting build fixes

tonic/dart_converter_wtf.h

 // Copyright 2015 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.
 
 #ifndef SKY_ENGINE_TONIC_DART_CONVERTER_WTF_H_
 #define SKY_ENGINE_TONIC_DART_CONVERTER_WTF_H_
 
 #include <string>
 #include "sky/engine/wtf/text/StringUTF8Adaptor.h"
 #include "sky/engine/wtf/text/WTFString.h"
 #include "tonic/dart_converter.h"
 #include "tonic/dart_string.h"
 #include "tonic/dart_string_cache.h"
 #include "tonic/dart_value.h"
 
-namespace blink {
+namespace tonic {
 
 ////////////////////////////////////////////////////////////////////////////////
 // Strings
 
 template <>
 struct DartConverter<String> {
   static Dart_Handle ToDart(DartState* state, const String& val) {
     if (val.isEmpty())
       return Dart_EmptyString();
     return Dart_HandleFromWeakPersistent(state->string_cache().Get(val.impl()));
@@ skipping 175 matching lines @@
   static Dart_Handle ToDart(RefPtr<T> val) {
     return DartConverter<T*>::ToDart(val.get());
   }
 
   static RefPtr<T> FromDart(Dart_Handle handle) {
     return DartConverter<T*>::FromDart(handle);
   }
 };
 
 #endif  // SKY_ENGINE_TONIC_DART_CONVERTER_WTF_H_