Revert of Script blocking resources tracking should be only done by Document::isScriptExecutionReady

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

Index: third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.h
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.h b/third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.h
index 938c9ee41e64d5d563ea4f285b2c4f386ce911a5..2c251c8f12684b1a79b4d212d9230666bb6436a0 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.h
+++ b/third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.h
@@ -64,6 +64,9 @@
                const TextPosition& scriptStartPosition);
 
   void executeScriptsWaitingForLoad(Resource*);
+  bool hasScriptsWaitingForResources() const {
+    return m_hasScriptsWaitingForResources;
+  }
   void executeScriptsWaitingForResources();
   bool executeScriptsWaitingForParsing();
 
@@ -92,7 +95,7 @@
 
   void runScript(Element*, const TextPosition& scriptStartPosition);
 
-  bool isPendingScriptReady();
+  bool isPendingScriptReady(const PendingScript*);
 
   void stopWatchingResourceForLoad(Resource*);
 
@@ -104,6 +107,12 @@
   Member<PendingScript> m_parserBlockingScript;
   // http://www.whatwg.org/specs/web-apps/current-work/#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing
   HeapDeque<Member<PendingScript>> m_scriptsToExecuteAfterParsing;
+
+  // We only want stylesheet loads to trigger script execution if script
+  // execution is currently stopped due to stylesheet loads, otherwise we'd
+  // cause nested script execution when parsing <style> tags since </style>
+  // tags can cause Document to call executeScriptsWaitingForResources.
+  bool m_hasScriptsWaitingForResources;
 };
 
 }  // namespace blink