[WIP] Implement BackGroundFilter as seperate layer in cc

cc/quads/filter_draw_quad.cc

+// Copyright 2014 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.
+
+#include "cc/quads/filter_draw_quad.h"
+
+#include "base/debug/trace_event_argument.h"
+#include "cc/output/filter_operations.h"
+#include "base/logging.h"
+#include "base/values.h"
+
+namespace cc {
+
+FilterDrawQuad::FilterDrawQuad() {
+}
+
+void FilterDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
+                            const gfx::Rect& visible_rect,
+                            const gfx::Rect& src_rect,
+                            const gfx::Rect& dst_draw_rect,
+                            const FilterOperations& background_filters) {
+  SetAll(shared_quad_state,
+         rect,
+         opaque_rect,
+         visible_rect,
+         needs_blending,
+         src_rect,
+         dst_draw_rect,
+         background_filters);
+}
+
+void FilterDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
+                            const gfx::Rect& rect,
+                            const gfx::Rect& opaque_rect,
+                            const gfx::Rect& visible_rect,
+                            bool needs_blending,
+                            const gfx::Rect& src_rect,
+                            const gfx::Rect& dst_draw_rect,
+                            const FilterOperations& background_filters) {
+  DrawQuad::SetAll(shared_quad_state,
+                   DrawQuad::FILTER_CONTENT,
+                   rect,
+                   opaque_rect,
+                   visible_rect,
+                   needs_blending);
+  this->src_filter_rect_ = src_rect;
+  this->draw_filter_rect_ = dst_draw_rect;
+  this->filter_operations_ = background_filters;
+}
+
+void FilterDrawQuad::IterateResources(
+    const ResourceIteratorCallback& callback) {
+}
+
+const FilterDrawQuad* FilterDrawQuad::MaterialCast(const DrawQuad* quad) {
+  DCHECK(quad->material == DrawQuad::FILTER_CONTENT);
+  return static_cast<const FilterDrawQuad*>(quad);
+}
+
+void FilterDrawQuad::ExtendValue(base::debug::TracedValue* value) const {
+}
+
+}  // namespace cc