DevTools: update DOM children when the only text child is modified.

BUG=525109

Review URL: https://codereview.chromium.org/1311363007

git-svn-id: svn://svn.chromium.org/blink/trunk@201279 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/inspector/elements/edit/edit-dom-actions-expected.txt

@@ -142,9 +142,7 @@ Running: testEditScript
   </div>
 ==== after ====
 - <div id="testEditScript">
-    - <script id="node-to-edit-script">
-          var i = 0;\n    var j = 0;\n
-      </script>
+      <script id="node-to-edit-script">var i = 0;\n    var j = 0;\n</script>
   </div>
 
 Running: testEditSVGAttribute

third_party/WebKit/LayoutTests/inspector/elements/highlight/highlight-dom-updates-expected.txt

@@ -34,6 +34,7 @@ Running: testSetTextContent
 //*[@id="textTest"]/text() "Text"
 
 Running: testSetTextNodeTextContent
+//*[@id="textTest"]
 //*[@id="textTest"]/text() "NewText"
 
 Running: testRemoveInlineTextNode
@@ -44,6 +45,7 @@ Running: testSetTextContentWithEmptyText
 //*[@id="textTest"]/text() "Text"
 
 Running: testClearTextNodeTextContent
+//*[@id="textTest"]
 //*[@id="textTest"]/text() ""
 
 Running: testAppendChildWhenHidden

third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeOutline.js

@@ -1199,6 +1199,9 @@ WebInspector.ElementsTreeOutline.prototype = {
     {
         var node = /** @type {!WebInspector.DOMNode} */ (event.data);
         this._addUpdateRecord(node).charDataModified();
+        // Text could be large and force us to render itself as the child in the tree outline.
+        if (node.parentNode && node.parentNode.firstChild === node.parentNode.lastChild)
+            this._addUpdateRecord(node.parentNode).childrenModified();
         this._updateModifiedNodesSoon();
     },
 
@@ -1386,22 +1389,17 @@ WebInspector.ElementsTreeOutline.prototype = {
      */
     _hasVisibleChildren: function(node)
     {
-        if (WebInspector.ElementsTreeElement.canShowInlineText(node))
-            return false;
-
         if (node.importedDocument())
             return true;
         if (node.templateContent())
             return true;
-        if (node.childNodeCount())
-            return true;
         if (WebInspector.ElementsTreeElement.visibleShadowRoots(node).length)
             return true;
         if (node.hasPseudoElements())
             return true;
         if (node.isInsertionPoint())
             return true;
-        return false;
+        return !!node.childNodeCount() && !WebInspector.ElementsTreeElement.canShowInlineText(node);
     },
 
     /**