Invalidate custom pseudo elements for RuleSet invalidations.

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 "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleRule.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleSheetContents.h"
@@ skipping 166 matching lines @@
 
   beforeCount = styleEngine().styleForElementCount();
   EXPECT_EQ(
       RuleSetInvalidationsScheduled,
       scheduleInvalidationsForRules(document(), "#i b { background: green}"));
   document().view()->updateAllLifecyclePhases();
   afterCount = styleEngine().styleForElementCount();
   EXPECT_EQ(1u, afterCount - beforeCount);
 }
 
+TEST_F(StyleEngineTest, RuleSetInvalidationCustomPseudo) {
+  document().body()->setInnerHTML(
+      "<style>progress { -webkit-appearance:none }</style>"
+      "<progress></progress>"
+      "<div></div><div></div><div></div><div></div><div></div><div></div>");
+
+  document().view()->updateAllLifecyclePhases();
+
+  unsigned beforeCount = styleEngine().styleForElementCount();
+  EXPECT_EQ(scheduleInvalidationsForRules(
+                document(), "::-webkit-progress-bar { background: green }"),
+            RuleSetInvalidationsScheduled);
+  document().view()->updateAllLifecyclePhases();
+  unsigned afterCount = styleEngine().styleForElementCount();
+  EXPECT_EQ(3u, afterCount - beforeCount);
+}
+
 TEST_F(StyleEngineTest, RuleSetInvalidationHost) {
   document().body()->setInnerHTML("<div id=nohost></div><div id=host></div>");
   Element* host = document().getElementById("host");
   ASSERT_TRUE(host);
 
   ShadowRootInit init;
   init.setMode("open");
   ShadowRoot* shadowRoot = host->attachShadow(
       ScriptState::forMainWorld(document().frame()), init, ASSERT_NO_EXCEPTION);
   ASSERT_TRUE(shadowRoot);
@@ skipping 230 matching lines @@
 
   styleRule->style()->setProperty("color", "green", "", ASSERT_NO_EXCEPTION);
   document().view()->updateAllLifecyclePhases();
 
   ASSERT_TRUE(t1->computedStyle());
   EXPECT_EQ(makeRGB(0, 128, 0),
             t1->computedStyle()->visitedDependentColor(CSSPropertyColor));
 }
 
 }  // namespace blink