Update from https://crrev.com/303153

cc/quads/largest_draw_quad.cc

Index: cc/quads/largest_draw_quad.cc
diff --git a/cc/quads/largest_draw_quad.cc b/cc/quads/largest_draw_quad.cc
new file mode 100644
index 0000000000000000000000000000000000000000..55fcb22f43d50e619826c474d175f6c7e4c7453a
--- /dev/null
+++ b/cc/quads/largest_draw_quad.cc
@@ -0,0 +1,20 @@
+// 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/render_pass_draw_quad.h"
+#include "cc/quads/stream_video_draw_quad.h"
+
+namespace cc {
+
+size_t LargestDrawQuadSize() {
+  // The largest quad is either a RenderPassDrawQuad or a StreamVideoDrawQuad
+  // depends on hardware structure.
+  return std::max(sizeof(RenderPassDrawQuad), sizeof(StreamVideoDrawQuad));
+}
+
+}  // namespace cc