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diff --git a/app/gfx/canvas.h b/app/gfx/canvas.h
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+// Copyright (c) 2006-2008 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 APP_GFX_CANVAS_H_
+#define APP_GFX_CANVAS_H_
+
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "skia/ext/platform_canvas.h"
+
+#if defined(OS_LINUX)
+typedef struct _cairo cairo_t;
+#endif
+
+namespace gfx {
+
+class Font;
+class Rect;
+
+// Canvas is a SkCanvas subclass that provides a number of methods for common
+// operations used throughout an application built using base/gfx and app/gfx.
+//
+// All methods that take integer arguments (as is used throughout views)
+// end with Int. If you need to use methods provided by the superclass
+// you'll need to do a conversion. In particular you'll need to use
+// macro SkIntToScalar(xxx), or if converting from a scalar to an integer
+// SkScalarRound.
+//
+// A handful of methods in this class are overloaded providing an additional
+// argument of type SkPorterDuff::Mode. SkPorterDuff::Mode specifies how the
+// source and destination colors are combined. Unless otherwise specified,
+// the variant that does not take a SkPorterDuff::Mode uses a transfer mode
+// of kSrcOver_Mode.
+class Canvas : public skia::PlatformCanvas {
+ public:
+  // Specifies the alignment for text rendered with the DrawStringInt method.
+  enum {
+    TEXT_ALIGN_LEFT = 1,
+    TEXT_ALIGN_CENTER = 2,
+    TEXT_ALIGN_RIGHT = 4,
+    TEXT_VALIGN_TOP = 8,
+    TEXT_VALIGN_MIDDLE = 16,
+    TEXT_VALIGN_BOTTOM = 32,
+
+    // Specifies the text consists of multiple lines.
+    MULTI_LINE = 64,
+
+    // By default DrawStringInt does not process the prefix ('&') character
+    // specially. That is, the string "&foo" is rendered as "&foo". When
+    // rendering text from a resource that uses the prefix character for
+    // mnemonics, the prefix should be processed and can be rendered as an
+    // underline (SHOW_PREFIX), or not rendered at all (HIDE_PREFIX).
+    SHOW_PREFIX = 128,
+    HIDE_PREFIX = 256,
+
+    // Prevent ellipsizing
+    NO_ELLIPSIS = 512,
+
+    // Specifies if words can be split by new lines.
+    // This only works with MULTI_LINE.
+    CHARACTER_BREAK = 1024,
+  };
+
+  // Creates an empty Canvas. Callers must use initialize before using the
+  // canvas.
+  Canvas();
+
+  Canvas(int width, int height, bool is_opaque);
+
+  virtual ~Canvas();
+
+  // Retrieves the clip rectangle and sets it in the specified rectangle if any.
+  // Returns true if the clip rect is non-empty.
+  bool GetClipRect(gfx::Rect* clip_rect);
+
+  // Wrapper function that takes integer arguments.
+  // Returns true if the clip is non-empty.
+  // See clipRect for specifics.
+  bool ClipRectInt(int x, int y, int w, int h);
+
+  // Test whether the provided rectangle intersects the current clip rect.
+  bool IntersectsClipRectInt(int x, int y, int w, int h);
+
+  // Wrapper function that takes integer arguments.
+  // See translate() for specifics.
+  void TranslateInt(int x, int y);
+
+  // Wrapper function that takes integer arguments.
+  // See scale() for specifics.
+  void ScaleInt(int x, int y);
+
+  // Fills the given rectangle with the given paint's parameters.
+  void FillRectInt(int x, int y, int w, int h, const SkPaint& paint);
+
+  // Fills the specified region with the specified color using a transfer
+  // mode of SkPorterDuff::kSrcOver_Mode.
+  void FillRectInt(const SkColor& color, int x, int y, int w, int h);
+
+  // Draws a single pixel rect in the specified region with the specified
+  // color, using a transfer mode of SkPorterDuff::kSrcOver_Mode.
+  //
+  // NOTE: if you need a single pixel line, use DraLineInt.
+  void DrawRectInt(const SkColor& color, int x, int y, int w, int h);
+
+  // Draws a single pixel rect in the specified region with the specified
+  // color and transfer mode.
+  //
+  // NOTE: if you need a single pixel line, use DraLineInt.
+  void DrawRectInt(const SkColor& color, int x, int y, int w, int h,
+                   SkPorterDuff::Mode mode);
+
+  // Draws a single pixel line with the specified color.
+  void DrawLineInt(const SkColor& color, int x1, int y1, int x2, int y2);
+
+  // Draws a bitmap with the origin at the specified location. The upper left
+  // corner of the bitmap is rendered at the specified location.
+  void DrawBitmapInt(const SkBitmap& bitmap, int x, int y);
+
+  // Draws a bitmap with the origin at the specified location, using the
+  // specified paint. The upper left corner of the bitmap is rendered at the
+  // specified location.
+  void DrawBitmapInt(const SkBitmap& bitmap, int x, int y,
+                     const SkPaint& paint);
+
+  // Draws a portion of a bitmap in the specified location. The src parameters
+  // correspond to the region of the bitmap to draw in the region defined
+  // by the dest coordinates.
+  //
+  // If the width or height of the source differs from that of the destination,
+  // the bitmap will be scaled. When scaling down, it is highly recommended
+  // that you call buildMipMap(false) on your bitmap to ensure that it has
+  // a mipmap, which will result in much higher-quality output. Set |filter|
+  // to use filtering for bitmaps, otherwise the nearest-neighbor algorithm
+  // is used for resampling.
+  //
+  // An optional custom SkPaint can be provided.
+  void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w,
+                     int src_h, int dest_x, int dest_y, int dest_w, int dest_h,
+                     bool filter);
+  void DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y, int src_w,
+                     int src_h, int dest_x, int dest_y, int dest_w, int dest_h,
+                     bool filter, const SkPaint& paint);
+
+  // Draws text with the specified color, font and location. The text is
+  // aligned to the left, vertically centered, clipped to the region. If the
+  // text is too big, it is truncated and '...' is added to the end.
+  void DrawStringInt(const std::wstring& text, const gfx::Font& font,
+                     const SkColor& color, int x, int y, int w, int h);
+
+  // Draws text with the specified color, font and location. The last argument
+  // specifies flags for how the text should be rendered. It can be one of
+  // TEXT_ALIGN_CENTER, TEXT_ALIGN_RIGHT or TEXT_ALIGN_LEFT.
+  void DrawStringInt(const std::wstring& text, const gfx::Font& font,
+                     const SkColor& color, int x, int y, int w, int h,
+                     int flags);
+
+#ifdef OS_WIN  // Only implemented on Windows for now.
+  // Draws text with a 1-pixel halo around it of the given color. It allows
+  // ClearType to be drawn to an otherwise transparenct bitmap for drag images.
+  // Drag images have only 1-bit of transparency, so we don't do any fancy
+  // blurring.
+  void DrawStringWithHalo(const std::wstring& text, const gfx::Font& font,
+                          const SkColor& text_color, const SkColor& halo_color,
+                          int x, int y, int w, int h, int flags);
+#endif
+
+  // Draws a dotted gray rectangle used for focus purposes.
+  void DrawFocusRect(int x, int y, int width, int height);
+
+  // Tiles the image in the specified region.
+  void TileImageInt(const SkBitmap& bitmap, int x, int y, int w, int h);
+  void TileImageInt(const SkBitmap& bitmap, int src_x, int src_y,
+                    int dest_x, int dest_y, int w, int h);
+
+  // Extracts a bitmap from the contents of this canvas.
+  SkBitmap ExtractBitmap();
+
+#if defined(OS_LINUX)
+  // Applies current matrix on the canvas to the cairo context. This should be
+  // invoked anytime you plan on drawing directly to the cairo context. Be
+  // sure and set the matrix back to the identity when done.
+  void ApplySkiaMatrixToCairoContext(cairo_t* cr);
+#endif
+
+  // Compute the size required to draw some text with the provided font.
+  // Attempts to fit the text with the provided width and height. Increases
+  // height and then width as needed to make the text fit. This method
+  // supports multiple lines.
+  static void SizeStringInt(const std::wstring& test, const gfx::Font& font,
+                            int *width, int* height, int flags);
+
+ private:
+#if defined(OS_WIN)
+  // Draws text with the specified color, font and location. The text is
+  // aligned to the left, vertically centered, clipped to the region. If the
+  // text is too big, it is truncated and '...' is added to the end.
+  void DrawStringInt(const std::wstring& text, HFONT font,
+                     const SkColor& color, int x, int y, int w, int h,
+                     int flags);
+#endif
+
+  DISALLOW_COPY_AND_ASSIGN(Canvas);
+};
+
+#if defined(OS_WIN) || defined(OS_LINUX)
+typedef skia::CanvasPaintT<Canvas> CanvasPaint;
+#endif
+
+}  // namespace gfx;
+
+#endif  // #ifndef APP_GFX_CANVAS_H_