Cleanup: Remove unneeded forward declarations in views.

views/controls/textfield/textfield_views_model.h

 // Copyright (c) 2011 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 VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
 #define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
 #pragma once
 
 #include <list>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/ime/composition_text.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/render_text.h"
 #include "views/views_export.h"
 
 namespace gfx {
-class Canvas;
-class Font;
 class RenderText;
-struct StyleRange;
 }  // namespace gfx
 
 namespace ui {
 class Range;
 }  // namespace ui
 
 namespace views {
 
 namespace internal {
 // Internal Edit class that keeps track of edits for undo/redo.
@@ skipping 11 matching lines @@
   // as DO_NOT_MERGE.
   MERGE_WITH_PREVIOUS,
 };
 
 }  // namespace internal
 
 // A model that represents a text content for TextfieldViews.
 // It supports editing, selection and cursor manipulation.
 class VIEWS_EXPORT TextfieldViewsModel {
  public:
-
   // Delegate interface implemented by the textfield view class to provided
   // additional functionalities required by the model.
   class VIEWS_EXPORT Delegate {
    public:
     // Called when the current composition text is confirmed or cleared.
     virtual void OnCompositionTextConfirmedOrCleared() = 0;
 
    protected:
     virtual ~Delegate();
   };
@@ skipping 256 matching lines @@
   // 2) new edit is added. (redo history is cleared)
   // 3) redone all undone edits.
   EditHistory::iterator current_edit_;
 
   DISALLOW_COPY_AND_ASSIGN(TextfieldViewsModel);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_