viz: Reject HW overlays with nearest filter

Canvas can have an "image-rendering: pixelated" css property.
In those cases, nearest neighbor filter will be used instead of
bilinear.

Since we don't do nearest neighbor filter when scanning out buffers
via HW overlays, this CL simply rejects the HW overlay path in those
cases and always falls back to GPU compositing.


Test: SingleOverlayOnTopTest.RejectNearestNeighbor
Change-Id: I907998f5a23ed2888ff0b3c53b9d7a938164acdc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510649Reviewed-by: Khushal <khushalsagar@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823414}

components/viz/service/display/overlay_candidate.cc

@@ -372,6 +372,8 @@ bool OverlayCandidate::FromTextureQuad(
     SurfaceDamageRectList* surface_damage_rect_list,
     const TextureDrawQuad* quad,
     OverlayCandidate* candidate) {
+  if (quad->nearest_neighbor)
+    return false;
   if (quad->background_color != SK_ColorTRANSPARENT &&
       (quad->background_color != SK_ColorBLACK ||
        quad->ShouldDrawWithBlending()))

components/viz/service/display/overlay_unittest.cc

@@ -1114,6 +1114,29 @@ TEST_F(SingleOverlayOnTopTest, RejectOpacity) {
   EXPECT_EQ(0U, candidate_list.size());
 }
 
+TEST_F(SingleOverlayOnTopTest, RejectNearestNeighbor) {
+  auto pass = CreateRenderPass();
+  CreateFullscreenCandidateQuad(
+      resource_provider_.get(), child_resource_provider_.get(),
+      child_provider_.get(), pass->shared_quad_state_list.back(), pass.get());
+  static_cast<TextureDrawQuad*>(pass->quad_list.back())->nearest_neighbor =
+      true;
+
+  OverlayCandidateList candidate_list;
+  OverlayProcessorInterface::FilterOperationsMap render_pass_filters;
+  OverlayProcessorInterface::FilterOperationsMap render_pass_backdrop_filters;
+  AggregatedRenderPassList pass_list;
+  pass_list.push_back(std::move(pass));
+  SurfaceDamageRectList surface_damage_rect_list;
+
+  overlay_processor_->ProcessForOverlays(
+      resource_provider_.get(), &pass_list, GetIdentityColorMatrix(),
+      render_pass_filters, render_pass_backdrop_filters,
+      &surface_damage_rect_list, nullptr, &candidate_list, &damage_rect_,
+      &content_bounds_);
+  EXPECT_EQ(0U, candidate_list.size());
+}
+
 TEST_F(SingleOverlayOnTopTest, RejectNonAxisAlignedTransform) {
   auto pass = CreateRenderPass();
   CreateFullscreenCandidateQuad(