Implement filter effects in Core Animation using CAFilters.

ui/gl/ca_renderer_layer_params.cc

 // Copyright 2016 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 "ui/gl/ca_renderer_layer_params.h"
 
 namespace ui {
 
 CARendererLayerParams::CARendererLayerParams(bool is_clipped,
                                              const gfx::Rect clip_rect,
@@ skipping 15 matching lines @@
       rect(rect),
       background_color(background_color),
       edge_aa_mask(edge_aa_mask),
       opacity(opacity),
       filter(filter) {}
 
 CARendererLayerParams::CARendererLayerParams(
     const CARendererLayerParams& other) = default;
 CARendererLayerParams::~CARendererLayerParams() = default;
 
+bool CARendererLayerParams::FilterEffect::operator==(
+    const FilterEffect& rhs) const {
+  return type == rhs.type && amount == rhs.amount &&
+         drop_shadow_offset == rhs.drop_shadow_offset &&
+         drop_shadow_color == rhs.drop_shadow_color;
+}
+
 }  // namespace ui