Skip paint chunks with effectively invisible opacity.

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

Index: third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp b/third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp
index 13e261855593600ea9c9e7db09557034cb7d4550..f35c55486ec0984a1711f8f1e9e67dbcd967e1ab 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp
@@ -32,29 +32,6 @@ class PaintLayerPainterTest
       : ScopedRootLayerScrollingForTest(GetParam().root_layer_scrolling),
         PaintControllerPaintTestBase(GetParam().slimming_paint_v2) {}
 
-  void ExpectPaintedOutputVisibility(const char* element_name,
-                                     bool expected_spv1) {
-    ExpectPaintedOutputVisibility(element_name, expected_spv1, expected_spv1);
-  }
-
-  void ExpectPaintedOutputVisibility(const char* element_name,
-                                     bool expected_spv1,
-                                     bool expected_spv2) {
-    PaintLayer* target_layer =
-        ToLayoutBox(GetLayoutObjectByElementId(element_name))->Layer();
-    PaintLayerPaintingInfo painting_info(nullptr, LayoutRect(),
-                                         kGlobalPaintNormalPhase, LayoutSize());
-    bool invisible =
-        PaintLayerPainter(*target_layer).PaintedOutputInvisible(painting_info);
-    bool expected_value = RuntimeEnabledFeatures::slimmingPaintV2Enabled()
-                              ? expected_spv2
-                              : expected_spv1;
-    EXPECT_EQ(expected_value, invisible)
-        << "Failed painted output visibility [spv2_enabled="
-        << RuntimeEnabledFeatures::slimmingPaintV2Enabled()
-        << ", expected=" << expected_value << ", actual=" << invisible << "].";
-  }
-
  private:
   void SetUp() override {
     PaintControllerPaintTestBase::SetUp();
@@ -792,141 +769,4 @@ TEST_P(PaintLayerPainterTest,
   EXPECT_TRUE(layer.NeedsPaintPhaseDescendantBlockBackgrounds());
 }
 
-TEST_P(PaintLayerPainterTest, DontPaintWithTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001'></div>");
-  ExpectPaintedOutputVisibility("target", true, false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithTinyOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001; "
-      "will-change: opacity'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithTinyOpacityAndBackdropFilter) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      "  backdrop-filter: blur(2px);'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithTinyOpacityAndBackdropFilterAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      "  backdrop-filter: blur(2px); will-change: opacity'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithCompositedTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      " will-change: transform'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithNonTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.1'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithEffectAnimationZeroOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "} "
-      "@keyframes example { "
-      "  from { opacity: 0.0;} "
-      "  to { opacity: 1.0;} "
-      "} "
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DontPaintWithTransformAnimationZeroOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div#target { "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "  opacity: 0.0; "
-      "} "
-      "@keyframes example { "
-      " from { transform: translate(0px, 0px); } "
-      " to { transform: translate(3em, 0px); } "
-      "} "
-      "</style> "
-      "<div id='target'>x</div></div>");
-  ExpectPaintedOutputVisibility("target", false, true);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithTransformAnimationZeroOpacityWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div#target { "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "  opacity: 0.0; "
-      "  will-change: opacity; "
-      "} "
-      "@keyframes example { "
-      " from { transform: translate(0px, 0px); } "
-      " to { transform: translate(3em, 0px); } "
-      "} "
-      "</style> "
-      "<div id='target'>x</div></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithZeroOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  opacity: 0; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithNoContentAndZeroOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  opacity: 0; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
 }  // namespace blink