Considering HTMLTokenizer state in HTMLSourceTracker

third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h

Index: third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h b/third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h
index c8ce59d35ebddd59373c3473a40c2e574f3400d4..81ed25d4eb2392ccac504e93b632c1b3954dcc53 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h
+++ b/third_party/WebKit/Source/core/html/parser/HTMLTokenizer.h
@@ -266,6 +266,22 @@ class CORE_EXPORT HTMLTokenizer {
   HTMLParserOptions m_options;
 };
 
+inline bool isEndTagBufferingState(HTMLTokenizer::State state) {
+  switch (state) {
+    case HTMLTokenizer::RCDATAEndTagOpenState:
+    case HTMLTokenizer::RCDATAEndTagNameState:
+    case HTMLTokenizer::RAWTEXTEndTagOpenState:
+    case HTMLTokenizer::RAWTEXTEndTagNameState:
+    case HTMLTokenizer::ScriptDataEndTagOpenState:
+    case HTMLTokenizer::ScriptDataEndTagNameState:
+    case HTMLTokenizer::ScriptDataEscapedEndTagOpenState:
+    case HTMLTokenizer::ScriptDataEscapedEndTagNameState:
+      return true;
+    default:
+      return false;
+  }
+}
+
 }  // namespace blink
 
 #endif