Add support for Radial Gradient Brush and Bitmap Brush to gfx::Canvas....

gfx/canvas.h

 // Copyright (c) 2010 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 GFX_CANVAS_H_
 #define GFX_CANVAS_H_
 #pragma once
 
 #include <string>
 
@@ skipping 189 matching lines @@
     TileMode_Mirror
   };
 
   // Creates a linear gradient brush.
   // |start_point| and |end_point| are the pixel positions of the start and end
   // points of the gradient.
   // |colors| is a list of color stops.
   // |positions| is a list of positions corresponding to the color stops, an
   // array of floats of increasing value ranging from 0.0f to 1.0f.
   // |position_count| is the size of the |colors| and |positions| arrays.
-  // |tile_mode|
-  // Returns an encapsulated platform shader object which the caller must
-  // delete.
+  // |tile_mode| specifies how the gradient brush repeats outside its natural
+  // bounds.
+  // Returns an encapsulated platform brush object which the caller must delete.
   virtual Brush* CreateLinearGradientBrush(
       const gfx::Point& start_point,
       const gfx::Point& end_point,
       const SkColor colors[],
       const float positions[],
       size_t position_count,
       TileMode tile_mode) = 0;
 
+  // Creates a radial gradient brush.
+  // |center_point| is the center of the circle in the brush's coordinate space.
+  // |radius| is the radius of the circle.
+  // |colors| is a list of color stops.
+  // |positions| is a list of positions corresponding to the color stops, an
+  // array of floats of increasing value ranging from 0.0f to 1.0f.
+  // |position_count| is the size of the |colors| and |positions| arrays.
+  // |tile_mode| specifies how the gradient brush repeats outside its natural
+  // bounds.
+  // Returns an encapsulated platform brush object which the caller must delete.
+  virtual Brush* CreateRadialGradientBrush(
+      const gfx::Point& center_point,
+      float radius,
+      const SkColor colors[],
+      const float positions[],
+      size_t position_count,
+      TileMode tile_mode) = 0;
+
+  // Creates a bitmap brush.
+  // |bitmap| is the bitmap to be used for the brush.
+  // |tile_mode_x,y| - specifies how the brush tiles the areas beyond those
+  // filled by its bitmap along each axis.
+  // Returns an encapsulated platform brush object which the caller must delete.
+  virtual Brush* CreateBitmapBrush(
+      const SkBitmap& bitmap,
+      TileMode tile_mode_x,
+      TileMode tile_mode_y) = 0;
+
   // TODO(beng): remove this once we don't need to use any skia-specific methods
   //             through this interface.
   // A quick and dirty way to obtain the underlying SkCanvas.
   virtual CanvasSkia* AsCanvasSkia() { return NULL; }
   virtual const CanvasSkia* AsCanvasSkia() const { return NULL; }
 };
 
 class CanvasPaint {
  public:
   virtual ~CanvasPaint() {}
 
   // Creates a canvas that paints to |view| when it is destroyed. The canvas is
   // sized to the client area of |view|.
   static CanvasPaint* CreateCanvasPaint(gfx::NativeView view);
 
   // Returns true if the canvas has an invalid rect that needs to be repainted.
   virtual bool IsValid() const = 0;
 
   // Returns the rectangle that is invalid.
   virtual gfx::Rect GetInvalidRect() const = 0;
 
   // Returns the underlying Canvas.
   virtual Canvas* AsCanvas() = 0;
 };
 
 }  // namespace gfx;
 
 #endif  // GFX_CANVAS_H_