Stop running pub get at gclient sync time and fix build bugs

tonic/dart_state.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 TONIC_DART_STATE_H_
 #define TONIC_DART_STATE_H_
 
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
 #include "base/supports_user_data.h"
-#include "dart/runtime/include/dart_api.h"
+#include "mojo/public/third_party/dart/runtime/include/dart_api.h"
 #include "tonic/dart_api_scope.h"
 #include "tonic/dart_isolate_scope.h"
 #include "tonic/dart_persistent_value.h"
 
 namespace tonic {
 class DartClassLibrary;
 class DartExceptionFactory;
 class DartLibraryLoader;
 class DartTimerHeap;
 
@@ skipping 41 matching lines @@
 
  protected:
   base::WeakPtrFactory<DartState> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DartState);
 };
 
 }  // namespace tonic
 
 #endif  // TONIC_DART_STATE_H_