RenderText API Outline.

ui/gfx/render_text_linux.h

Index: ui/gfx/render_text_linux.h
diff --git a/ui/gfx/render_text_linux.h b/ui/gfx/render_text_linux.h
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+++ b/ui/gfx/render_text_linux.h
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+// 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 UI_GFX_RENDER_TEXT_LINUX_H_
+#define UI_GFX_RENDER_TEXT_LINUX_H_
+#pragma once
+
+#include <string>
+
+#include "ui/gfx/render_text.h"
+
+namespace gfx {
+
+// RenderTextLinux is the Linux implementation of RenderText using Pango.
+class RenderTextLinux : RenderText {
+ public:
+  RenderTextLinux();
+  RenderTextLinux(const string16& text,
+                  const gfx::Font& font,
+                  const SkColor& color,
+                  const gfx::Rect display_rect,
+                  int flags);
+  virtual ~RenderTextLinux();
+
+  // Overridden from RenderText
+  virtual void Draw(HDC drawing_context) const OVERRIDE;
+  virtual size_t FindCursorPosition(const gfx::Point& point) const OVERRIDE;
+  virtual std::vector<gfx::Rect> GetSubstringBounds(
+      const ui::Range& range) const OVERRIDE;
+  virtual size_t GetLeftCursorPosition(size_t position,
+                                       bool move_by_word) const OVERRIDE;
+  virtual size_t GetRightCursorPosition(size_t position,
+                                        bool move_by_word) const OVERRIDE;
+  virtual gfx::Rect GetCursorBounds(size_t position,
+                                    bool insert_mode) const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(RenderTextLinux);
+};
+
+}  // namespace gfx;
+
+#endif  // UI_GFX_RENDER_TEXT_LINUX_H_