Merge 174141 "HTML Imports: Take care of cycles according to the..."

Source/core/html/imports/HTMLImportLoader.cpp

Index: Source/core/html/imports/HTMLImportLoader.cpp
===================================================================
--- Source/core/html/imports/HTMLImportLoader.cpp	(revision 174593)
+++ Source/core/html/imports/HTMLImportLoader.cpp	(working copy)
@@ -208,12 +208,7 @@
 
 bool HTMLImportLoader::shouldBlockScriptExecution() const
 {
-    for (size_t i = 0; i < m_imports.size(); ++i) {
-        if (!m_imports[i]->state().shouldBlockScriptExecution())
-            return false;
-    }
-
-    return true;
+    return firstImport()->state().shouldBlockScriptExecution();
 }
 
 PassRefPtr<CustomElementMicrotaskQueue> HTMLImportLoader::microtaskQueue() const