Implement on demand quad rasterization for PicturePiles.

cc/quads/picture_draw_quad.h

Index: cc/quads/picture_draw_quad.h
diff --git a/cc/quads/picture_draw_quad.h b/cc/quads/picture_draw_quad.h
new file mode 100644
index 0000000000000000000000000000000000000000..847c4f8a1791b3a506ef1ab3f52e7f06cb66d9d2
--- /dev/null
+++ b/cc/quads/picture_draw_quad.h
@@ -0,0 +1,62 @@
+// Copyright 2013 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 CC_QUADS_PICTURE_DRAW_QUAD_H_
+#define CC_QUADS_PICTURE_DRAW_QUAD_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/base/cc_export.h"
+#include "cc/quads/content_draw_quad_base.h"
+#include "cc/resources/picture_pile_impl.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/rect_f.h"
+#include "ui/gfx/size.h"
+
+namespace cc {
+
+// Used for on-demand tile rasterization.
+class CC_EXPORT PictureDrawQuad : public ContentDrawQuadBase {
+ public:
+  static scoped_ptr<PictureDrawQuad> Create();
+  virtual ~PictureDrawQuad();
+
+  void SetNew(const SharedQuadState* shared_quad_state,
+              gfx::Rect rect,
+              gfx::Rect opaque_rect,
+              const gfx::RectF& tex_coord_rect,
+              gfx::Size texture_size,
+              bool swizzle_contents,
+              gfx::Rect content_rect,
+              float contents_scale,
+              scoped_refptr<PicturePileImpl> picture_pile);
+
+  void SetAll(const SharedQuadState* shared_quad_state,
+              gfx::Rect rect,
+              gfx::Rect opaque_rect,
+              gfx::Rect visible_rect,
+              bool needs_blending,
+              const gfx::RectF& tex_coord_rect,
+              gfx::Size texture_size,
+              bool swizzle_contents,
+              gfx::Rect content_rect,
+              float contents_scale,
+              scoped_refptr<PicturePileImpl> picture_pile);
+
+  gfx::Rect content_rect;
+  float contents_scale;
+  scoped_refptr<PicturePileImpl> picture_pile;
+
+  virtual void IterateResources(const ResourceIteratorCallback& callback)
+      OVERRIDE;
+
+  static const PictureDrawQuad* MaterialCast(const DrawQuad* quad);
+
+ private:
+  PictureDrawQuad();
+};
+
+}
+
+#endif  // CC_QUADS_PICTURE_DRAW_QUAD_H_