[BlinkGenPropertyTrees] Run DocumentAnimations::UpdateAnimations for svg

This patch runs DocumentAnimations::UpdateAnimations for svg images,
matching the SPV2 codepath. The corresponding non-svg-image
UpdateAnimations call is behind a SPV2 || BGPT conditional in
local_frame_view.cc.

Bug: 854198
Cq-Include-Trybots: luci.chromium.try:linux-blink-gen-property-trees;luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: If5132139cb7dcf0add0227c189f73809933a20c3
Reviewed-on: https://chromium-review.googlesource.com/1107098Reviewed-by: Tien-Ren Chen <trchen@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568669}

third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-gen-property-trees

@@ -647,7 +647,3 @@ crbug.com/854196 paint/invalidation/compositing/should-not-repaint-composited-de
 crbug.com/854196 paint/invalidation/compositing/should-not-repaint-composited-descendants.html [ Failure ]
 crbug.com/854196 paint/invalidation/scroll/overflow-scroll-composited-non-stacking-child.html [ Failure ]
 crbug.com/854196 paint/invalidation/scroll/repaint-composited-child-in-scrolled-container.html [ Failure ]
-
-# Animated SVG images do not work.
-crbug.com/854198 paint/invalidation/svg/image-animation-with-zoom.html [ Failure ]
-crbug.com/854198 svg/as-image/svg-image-with-css-animation.html [ Failure ]

third_party/blink/renderer/core/svg/graphics/svg_image.cc

@@ -636,11 +636,12 @@ void SVGImage::ServiceAnimations(
   LocalFrameView* frame_view = ToLocalFrame(page_->MainFrame())->View();
   frame_view->UpdateAllLifecyclePhasesExceptPaint();
 
-  if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) {
-    // For SPv2 we run UpdateAnimations after the paint phase, but per above
-    // comment we don't want to run lifecycle through to paint for SVG images.
-    // Since we know SVG images never have composited animations we can update
-    // animations directly without worrying about including
+  if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled() ||
+      RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled()) {
+    // For SPv2/BGPT we run UpdateAnimations after the paint phase, but per the
+    // above comment, we don't want to run lifecycle through to paint for SVG
+    // images. Since we know SVG images never have composited animations we can
+    // update animations directly without worrying about including
     // PaintArtifactCompositor analysis of whether animations should be
     // composited.
     base::Optional<CompositorElementIdSet> composited_element_ids;