Add logic to convert from RenderPassDrawQuads to CALayerOverlays.

ui/gl/ca_renderer_layer_params.h

Index: ui/gl/ca_renderer_layer_params.h
diff --git a/ui/gl/ca_renderer_layer_params.h b/ui/gl/ca_renderer_layer_params.h
index a6727b471384b5aadf25b21c6365a511e0ce67e5..ab046a2cc08d0c8283b60bb602811581c5916833 100644
--- a/ui/gl/ca_renderer_layer_params.h
+++ b/ui/gl/ca_renderer_layer_params.h
@@ -5,6 +5,10 @@
 #ifndef UI_GL_CA_RENDERER_LAYER_PARAMS_H_
 #define UI_GL_CA_RENDERER_LAYER_PARAMS_H_
 
+#include <vector>
+
+#include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/transform.h"
@@ -42,6 +46,31 @@ struct GL_EXPORT CARendererLayerParams {
   unsigned edge_aa_mask;
   float opacity;
   unsigned filter;
+
+  // This is a subset of cc::FilterOperation::FilterType.
+  enum class FilterEffectType : uint32_t {
+    GRAYSCALE,
+    SEPIA,
+    SATURATE,
+    HUE_ROTATE,
+    INVERT,
+    BRIGHTNESS,
+    CONTRAST,
+    OPACITY,
+    BLUR,
+    DROP_SHADOW,
+  };
+  struct GL_EXPORT FilterEffect {
+    FilterEffectType type = FilterEffectType::GRAYSCALE;
+
+    // For every filter other than DROP_SHADOW, only |amount| is populated.
+    float amount = 0;
+    gfx::Point drop_shadow_offset;
+    SkColor drop_shadow_color = 0;
+  };
+  using FilterEffects = std::vector<FilterEffect>;
+
+  FilterEffects filter_effects;
 };
 
 }  // namespace ui