mus: Remove unnecessary const from property TypeConverter templates

components/mus/public/cpp/tests/window_unittest.cc

 // Copyright 2014 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 "components/mus/public/cpp/window.h"
 
 #include <limits.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 773 matching lines @@
       const std::vector<uint8_t>* new_data) override {
     changes_.push_back(base::StringPrintf(
         "window=%s shared property changed key=%s old_value=%s new_value=%s",
         WindowIdToString(window->id()).c_str(), name.c_str(),
         VectorToString(old_data).c_str(), VectorToString(new_data).c_str()));
   }
 
   std::string VectorToString(const std::vector<uint8_t>* data) {
     if (!data)
       return "NULL";
-    gfx::Size size =
-        mojo::TypeConverter<gfx::Size, const std::vector<uint8_t>>::Convert(
-            *data);
+    gfx::Size size = mojo::ConvertTo<gfx::Size>(*data);
     return base::StringPrintf("%d,%d", size.width(), size.height());
   }
 
   Window* window_;
   Changes changes_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedPropertyChangeObserver);
 };
 
 }  // namespace
@@ skipping 319 matching lines @@
   scoped_ptr<TestWindow> window0(CreateTestWindow(1, parent.get()));
   scoped_ptr<TestWindow> window1(CreateTestWindow(2, parent.get()));
 
   TestWindow* window2 = CreateTestWindow(3, parent.get());
 
   window0->AddTransientWindow(window2);
   EXPECT_EQ("1 3 2", ChildWindowIDsAsString(parent.get()));
 }
 
 }  // namespace mus