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

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/dom/StyleEngine.h"
 
 #include <memory>
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleRule.h"
@@ skipping 313 matching lines @@
       host->attachShadow(ToScriptStateForMainWorld(GetDocument().GetFrame()),
                          init, ASSERT_NO_EXCEPTION);
   ASSERT_TRUE(shadow_root);
 
   shadow_root->setInnerHTML("<div></div><div class=a></div><div></div>");
   GetDocument().View()->UpdateAllLifecyclePhases();
 
   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) {
   GetDocument().body()->setInnerHTML(
       "<style>div {}</style>"
       "<style id='sheet' media='(min-width: 200px)'>"
       "  div {}"
       "</style>");
 
   Element* style_element = GetDocument().getElementById("sheet");
@@ skipping 201 matching lines @@
       "</style>"
       "<div id='t1'></div>"
       "<span></span>");
 
   GetStyleEngine().UpdateActiveStyle();
   EXPECT_FALSE(GetDocument().ChildNeedsStyleInvalidation());
   EXPECT_FALSE(GetDocument().NeedsStyleInvalidation());
 }
 
 }  // namespace blink