Blend TextureLayer background-color at draw time.

cc/layers/nine_patch_layer_impl.cc

Index: cc/layers/nine_patch_layer_impl.cc
diff --git a/cc/layers/nine_patch_layer_impl.cc b/cc/layers/nine_patch_layer_impl.cc
index 57723a02108fc7c0ac17cc2274cfeac8dbdb13cd..4afb7bbeabe91876bf9e03ef52c4c291d9adb2d8 100644
--- a/cc/layers/nine_patch_layer_impl.cc
+++ b/cc/layers/nine_patch_layer_impl.cc
@@ -179,7 +179,9 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                premultiplied_alpha,
                uv_top_left.origin(),
                uv_top_left.bottom_right(),
-               vertex_opacity, flipped);
+               vertex_opacity,
+               SK_ColorTRANSPARENT,
+               flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
   quad = TextureDrawQuad::Create();
@@ -190,7 +192,9 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                premultiplied_alpha,
                uv_top_right.origin(),
                uv_top_right.bottom_right(),
-               vertex_opacity, flipped);
+               vertex_opacity,
+               SK_ColorTRANSPARENT,
+               flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
   quad = TextureDrawQuad::Create();
@@ -202,6 +206,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_bottom_left.origin(),
                uv_bottom_left.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
@@ -214,6 +219,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_bottom_right.origin(),
                uv_bottom_right.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
@@ -226,6 +232,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_top.origin(),
                uv_top.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
@@ -238,6 +245,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_left.origin(),
                uv_left.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
@@ -250,6 +258,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_right.origin(),
                uv_right.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 
@@ -262,6 +271,7 @@ void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                uv_bottom.origin(),
                uv_bottom.bottom_right(),
                vertex_opacity,
+               SK_ColorTRANSPARENT,
                flipped);
   quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
 }