Remove CDATASection

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 922487e26cebd25b1626c6c36508d8b54749d645..a629a5eb30005f53c0c41345a0657848562ce69b 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -60,7 +60,6 @@
 #include "core/dom/AXObjectCache.h"
 #include "core/dom/AddConsoleMessageTask.h"
 #include "core/dom/Attr.h"
-#include "core/dom/CDATASection.h"
 #include "core/dom/ClientRect.h"
 #include "core/dom/Comment.h"
 #include "core/dom/ContextFeatures.h"
@@ -94,6 +93,7 @@
 #include "core/dom/SelectorQuery.h"
 #include "core/dom/StaticNodeList.h"
 #include "core/dom/StyleEngine.h"
+#include "core/dom/Text.h"
 #include "core/dom/TouchList.h"
 #include "core/dom/TransformSource.h"
 #include "core/dom/TreeWalker.h"
@@ -885,19 +885,6 @@ PassRefPtrWillBeRawPtr<Comment> Document::createComment(const String& data)
     return Comment::create(*this, data);
 }
 
-PassRefPtrWillBeRawPtr<CDATASection> Document::createCDATASection(const String& data, ExceptionState& exceptionState)
-{
-    if (isHTMLDocument()) {
-        exceptionState.throwDOMException(NotSupportedError, "This operation is not supported for HTML documents.");
-        return nullptr;
-    }
-    if (data.contains("]]>")) {
-        exceptionState.throwDOMException(InvalidCharacterError, "String cannot contain ']]>' since that is the end delimiter of a CData section.");
-        return nullptr;
-    }
-    return CDATASection::create(*this, data);
-}
-
 PassRefPtrWillBeRawPtr<ProcessingInstruction> Document::createProcessingInstruction(const String& target, const String& data, ExceptionState& exceptionState)
 {
     if (!isValidName(target)) {
@@ -935,8 +922,6 @@ PassRefPtrWillBeRawPtr<Node> Document::importNode(Node* importedNode, bool deep,
     switch (importedNode->nodeType()) {
     case TEXT_NODE:
         return createTextNode(importedNode->nodeValue());
-    case CDATA_SECTION_NODE:
-        return CDATASection::create(*this, importedNode->nodeValue());
     case PROCESSING_INSTRUCTION_NODE:
         return createProcessingInstruction(importedNode->nodeName(), importedNode->nodeValue(), exceptionState);
     case COMMENT_NODE:
@@ -3148,7 +3133,6 @@ bool Document::childTypeAllowed(NodeType type) const
 {
     switch (type) {
     case ATTRIBUTE_NODE:
-    case CDATA_SECTION_NODE:
     case DOCUMENT_FRAGMENT_NODE:
     case DOCUMENT_NODE:
     case TEXT_NODE:
@@ -3199,7 +3183,6 @@ bool Document::canAcceptChild(const Node& newChild, const Node* oldChild, Except
         for (Node& child : NodeTraversal::childrenOf(toDocumentFragment(newChild))) {
             switch (child.nodeType()) {
             case ATTRIBUTE_NODE:
-            case CDATA_SECTION_NODE:
             case DOCUMENT_FRAGMENT_NODE:
             case DOCUMENT_NODE:
             case TEXT_NODE:
@@ -3220,7 +3203,6 @@ bool Document::canAcceptChild(const Node& newChild, const Node* oldChild, Except
     } else {
         switch (newChild.nodeType()) {
         case ATTRIBUTE_NODE:
-        case CDATA_SECTION_NODE:
         case DOCUMENT_FRAGMENT_NODE:
         case DOCUMENT_NODE:
         case TEXT_NODE: