Implement a part of ProcessingInstruction by using PrivateScript

Source/core/dom/ProcessingInstruction.cpp

Index: Source/core/dom/ProcessingInstruction.cpp
diff --git a/Source/core/dom/ProcessingInstruction.cpp b/Source/core/dom/ProcessingInstruction.cpp
index 585454e54fe53b4d59fd27022fa329e107def90e..a80b74ca9d6b192dcc768193bdfa5a42247b0dc5 100644
--- a/Source/core/dom/ProcessingInstruction.cpp
+++ b/Source/core/dom/ProcessingInstruction.cpp
@@ -21,6 +21,7 @@
 #include "config.h"
 #include "core/dom/ProcessingInstruction.h"
 
+#include "bindings/core/v8/V8ProcessingInstruction.h"
 #include "core/FetchInitiatorTypeNames.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/MediaList.h"
@@ -33,6 +34,7 @@
 #include "core/fetch/XSLStyleSheetResource.h"
 #include "core/xml/XSLStyleSheet.h"
 #include "core/xml/parser/XMLDocumentParser.h" // for parseAttributes()
+#include "platform/EventDispatchForbiddenScope.h"
 
 namespace blink {
 
@@ -65,7 +67,7 @@ ProcessingInstruction::~ProcessingInstruction()
     if (inDocument()) {
         if (m_isCSS)
             document().styleEngine()->removeStyleSheetCandidateNode(this);
-        else if (m_isXSL)
+        else if (m_isXSL && !RuntimeEnabledFeatures::xsltInPrivateScriptEnabled())
             document().styleEngine()->removeXSLStyleSheet(this);
     }
 #endif
@@ -179,7 +181,8 @@ bool ProcessingInstruction::isLoading() const
 bool ProcessingInstruction::sheetLoaded()
 {
     if (!isLoading()) {
-        document().styleEngine()->removePendingSheet(this);
+        if (!RuntimeEnabledFeatures::xsltInPrivateScriptEnabled())
+            document().styleEngine()->removePendingSheet(this);
         return true;
     }
     return false;
@@ -256,6 +259,11 @@ Node::InsertionNotificationRequest ProcessingInstruction::insertedInto(Container
     String href;
     String charset;
     bool isValid = checkStyleSheet(href, charset);
+    if (m_isXSL && RuntimeEnabledFeatures::xsltInPrivateScriptEnabled()) {
+        EventDispatchForbiddenScope::AllowUserAgentEvents allowUserAgentEvents;
+        V8ProcessingInstruction::PrivateScript::onProcessingInstructionAvailableMethod(document().frame(), this, href, document().parsing());
+        return InsertionDone;
+    }
     if (m_isCSS)
         document().styleEngine()->addStyleSheetCandidateNode(this, m_createdByParser);
     else if (m_isXSL)
@@ -273,7 +281,7 @@ void ProcessingInstruction::removedFrom(ContainerNode* insertionPoint)
 
     if (m_isCSS)
         document().styleEngine()->removeStyleSheetCandidateNode(this);
-    else if (m_isXSL)
+    else if (m_isXSL && !RuntimeEnabledFeatures::xsltInPrivateScriptEnabled())
         document().styleEngine()->removeXSLStyleSheet(this);
 
     RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet;