Reland of Make /deep/ as no-op and remove ::shadow in dynamic profile

third_party/WebKit/Source/core/dom/StyleEngineTest.cpp

Index: third_party/WebKit/Source/core/dom/StyleEngineTest.cpp
diff --git a/third_party/WebKit/Source/core/dom/StyleEngineTest.cpp b/third_party/WebKit/Source/core/dom/StyleEngineTest.cpp
index da6ca9d5d107a85ed355a43256baf4db658dd210..ae675df021a057ddaae3bc6b3db8e86222b2174a 100644
--- a/third_party/WebKit/Source/core/dom/StyleEngineTest.cpp
+++ b/third_party/WebKit/Source/core/dom/StyleEngineTest.cpp
@@ -331,12 +331,6 @@
   EXPECT_EQ(ScheduleInvalidationsForRules(
                 *shadow_root, ".a ::content span { background: green}"),
             kRuleSetInvalidationFullRecalc);
-  EXPECT_EQ(ScheduleInvalidationsForRules(
-                *shadow_root, ".a /deep/ span { background: green}"),
-            kRuleSetInvalidationFullRecalc);
-  EXPECT_EQ(ScheduleInvalidationsForRules(
-                *shadow_root, ".a::shadow span { background: green}"),
-            kRuleSetInvalidationFullRecalc);
 }
 
 TEST_F(StyleEngineTest, HasViewportDependentMediaQueries) {