[SPv175] Disable comparison of some paint property node fields

The fields are used for SPv2 only, so disable comparison of them
for SPv175.

Bug: 813577
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I09f808d7545e49edefdbffcff1bb4385563a47d9
Reviewed-on: https://chromium-review.googlesource.com/926911
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537906}

third_party/WebKit/Source/core/paint/PaintPropertyTreeUpdateTests.cpp

@@ -1024,6 +1024,9 @@ TEST_P(PaintPropertyTreeUpdateTest, WillTransformChangeAboveFixed) {
 }
 
 TEST_P(PaintPropertyTreeUpdateTest, CompositingReasonForAnimation) {
+  if (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled())
+    return;
+
   SetBodyInnerHTML(R"HTML(
     <style>
       #target {

third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h

@@ -13,6 +13,7 @@
 #include "platform/graphics/paint/ClipPaintPropertyNode.h"
 #include "platform/graphics/paint/PaintPropertyNode.h"
 #include "platform/graphics/paint/TransformPaintPropertyNode.h"
+#include "platform/runtime_enabled_features.h"
 #include "platform/wtf/text/WTFString.h"
 
 #include <iosfwd>
@@ -64,8 +65,9 @@ class PLATFORM_EXPORT EffectPaintPropertyNode
     if (local_transform_space == local_transform_space_ &&
         output_clip == output_clip_ && color_filter == color_filter_ &&
         filter == filter_ && opacity == opacity_ && blend_mode == blend_mode_ &&
-        direct_compositing_reasons == direct_compositing_reasons_ &&
-        compositor_element_id == compositor_element_id_ &&
+        (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled() ||
+         (direct_compositing_reasons == direct_compositing_reasons_ &&
+          compositor_element_id == compositor_element_id_)) &&
         paint_offset == paint_offset_)
       return parent_changed;
 
@@ -121,8 +123,9 @@ class PLATFORM_EXPORT EffectPaintPropertyNode
            output_clip_ == o.output_clip_ && color_filter_ == o.color_filter_ &&
            filter_ == o.filter_ && opacity_ == o.opacity_ &&
            blend_mode_ == o.blend_mode_ &&
-           direct_compositing_reasons_ == o.direct_compositing_reasons_ &&
-           compositor_element_id_ == o.compositor_element_id_ &&
+           (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled() ||
+            (direct_compositing_reasons_ == o.direct_compositing_reasons_ &&
+             compositor_element_id_ == o.compositor_element_id_)) &&
            paint_offset_ == o.paint_offset_;
   }
 #endif

third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.h

@@ -12,6 +12,7 @@
 #include "platform/graphics/paint/GeometryMapperTransformCache.h"
 #include "platform/graphics/paint/PaintPropertyNode.h"
 #include "platform/graphics/paint/ScrollPaintPropertyNode.h"
+#include "platform/runtime_enabled_features.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "platform/wtf/text/WTFString.h"
 
@@ -77,9 +78,11 @@ class PLATFORM_EXPORT TransformPaintPropertyNode
 
     if (matrix == matrix_ && origin == origin_ &&
         flattens_inherited_transform == flattens_inherited_transform_ &&
-        rendering_context_id == rendering_context_id_ &&
-        direct_compositing_reasons == direct_compositing_reasons_ &&
-        compositor_element_id == compositor_element_id_ && scroll == scroll_)
+        (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled() ||
+         (rendering_context_id == rendering_context_id_ &&
+          direct_compositing_reasons == direct_compositing_reasons_ &&
+          compositor_element_id == compositor_element_id_)) &&
+        scroll == scroll_)
       return parent_changed;
 
     SetChanged();
@@ -145,9 +148,10 @@ class PLATFORM_EXPORT TransformPaintPropertyNode
     return Parent() == o.Parent() && matrix_ == o.matrix_ &&
            origin_ == o.origin_ &&
            flattens_inherited_transform_ == o.flattens_inherited_transform_ &&
-           rendering_context_id_ == o.rendering_context_id_ &&
-           direct_compositing_reasons_ == o.direct_compositing_reasons_ &&
-           compositor_element_id_ == o.compositor_element_id_ &&
+           (!RuntimeEnabledFeatures::SlimmingPaintV2Enabled() ||
+            (rendering_context_id_ == o.rendering_context_id_ &&
+             direct_compositing_reasons_ == o.direct_compositing_reasons_ &&
+             compositor_element_id_ == o.compositor_element_id_)) &&
            scroll_ == o.scroll_;
   }
 #endif