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 cfa280d811f4463e34c9cb0c34d7992bab4b8eb5..8ee37811f490b12215479c3052c54893e84251b7 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"
@@ -65,8 +66,6 @@ ProcessingInstruction::~ProcessingInstruction()
     if (inDocument()) {
         if (m_isCSS)
             document().styleEngine()->removeStyleSheetCandidateNode(this);
-        else if (m_isXSL)
-            document().styleEngine()->removeXSLStyleSheet(this);
     }
 #endif
 }
@@ -178,7 +177,11 @@ bool ProcessingInstruction::isLoading() const
 bool ProcessingInstruction::sheetLoaded()
 {
     if (!isLoading()) {
-        document().styleEngine()->removePendingSheet(this);
+        if (m_isCSS) {
+            document().styleEngine()->removePendingSheet(this);
+        } else if (RuntimeEnabledFeatures::xsltEnabled() && m_isXSL) {
+            V8ProcessingInstruction::sheetLoadedCallbackMethodImplementedInPrivateScript(document().frame(), this);
+        }
         return true;
     }
     return false;
@@ -252,10 +255,14 @@ Node::InsertionNotificationRequest ProcessingInstruction::insertedInto(Container
     bool isValid = checkStyleSheet(href, charset);
     if (m_isCSS)
         document().styleEngine()->addStyleSheetCandidateNode(this, m_createdByParser);
-    else if (m_isXSL)
-        document().styleEngine()->addXSLStyleSheet(this, m_createdByParser);
     if (isValid)
         process(href, charset);
+
+    if (RuntimeEnabledFeatures::xsltEnabled() && m_isXSL) {
+        V8ProcessingInstruction::registerSheetMethodImplementedInPrivateScript(document().frame(), this, document().parsing());
+        if (!m_loading)
+            V8ProcessingInstruction::sheetLoadedCallbackMethodImplementedInPrivateScript(document().frame(), this);
+    }
     return InsertionDone;
 }
 
@@ -265,10 +272,11 @@ void ProcessingInstruction::removedFrom(ContainerNode* insertionPoint)
     if (!insertionPoint->inDocument())
         return;
 
-    if (m_isCSS)
+    if (m_isCSS) {
         document().styleEngine()->removeStyleSheetCandidateNode(this);
-    else if (m_isXSL)
-        document().styleEngine()->removeXSLStyleSheet(this);
+    } else if (RuntimeEnabledFeatures::xsltEnabled() && m_isXSL) {
+        V8ProcessingInstruction::unregisterSheetMethodImplementedInPrivateScript(document().frame(), this);
+    }
 
     RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet;