Revert "Delete CC."

cc/quads/largest_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/largest_draw_quad.h"
+
+#include <algorithm>
+
+#include "cc/quads/checkerboard_draw_quad.h"
+#include "cc/quads/debug_border_draw_quad.h"
+#include "cc/quads/io_surface_draw_quad.h"
+#include "cc/quads/render_pass_draw_quad.h"
+#include "cc/quads/solid_color_draw_quad.h"
+#include "cc/quads/stream_video_draw_quad.h"
+#include "cc/quads/surface_draw_quad.h"
+#include "cc/quads/texture_draw_quad.h"
+#include "cc/quads/tile_draw_quad.h"
+#include "cc/quads/yuv_video_draw_quad.h"
+
+namespace {
+const size_t kLargestDrawQuadSize =
+    sizeof(cc::RenderPassDrawQuad) > sizeof(cc::StreamVideoDrawQuad)
+        ? sizeof(cc::RenderPassDrawQuad)
+        : sizeof(cc::StreamVideoDrawQuad);
+}  // namespace
+
+namespace cc {
+
+size_t LargestDrawQuadSize() {
+  // Currently the largest quad is either a RenderPassDrawQuad or a
+  // StreamVideoDrawQuad depends on hardware structure.
+
+  // Use compile assert to make sure largest is actually larger than all other
+  // type of draw quads.
+  static_assert(sizeof(CheckerboardDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. CheckerboardDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(DebugBorderDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. DebugBorderDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(IOSurfaceDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. IOSurfaceDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(TextureDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. TextureDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(SolidColorDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. SolidColorDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(SurfaceDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. SurfaceDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(TileDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. TileDrawQuad is "
+                "currently largest.");
+  static_assert(sizeof(YUVVideoDrawQuad) <= kLargestDrawQuadSize,
+                "Largest Draw Quad size needs update. YUVVideoDrawQuad is "
+                "currently largest.");
+
+  return kLargestDrawQuadSize;
+}
+
+}  // namespace cc