Add input element values to DOMSnapshot command

third_party/WebKit/Source/core/inspector/browser_protocol.json

 {
     "version": { "major": "1", "minor": "2" },
     "domains": [{
         "domain": "Inspector",
         "experimental": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 3357 matching lines @@
         "description": "This domain facilitates obtaining document snapshots with DOM, layout, and style information.",
         "dependencies": ["CSS", "DOM", "Page"],
         "types": [
             {
                 "id": "DOMNode",
                 "type": "object",
                 "properties": [
                     { "name": "nodeType", "type": "integer", "description": "<code>Node</code>'s nodeType." },
                     { "name": "nodeName", "type": "string", "description": "<code>Node</code>'s nodeName." },
                     { "name": "nodeValue", "type": "string", "description": "<code>Node</code>'s nodeValue." },
+                    { "name": "textValue", "type": "string", "optional": true, "description": "Only set for textarea elements, contains the text value." },
+                    { "name": "inputValue", "type": "string", "optional": true, "description": "Only set for input elements, contains the input's associated text value." },
+                    { "name": "inputChecked", "type": "boolean", "optional": true, "description": "Only set for radio and checkbox input elements, indicates if the element has been checked" },
+                    { "name": "optionSelected", "type": "boolean", "optional": true, "description": "Only set for option elements, indicates if the element has been selected" },
                     { "name": "backendNodeId", "$ref": "DOM.BackendNodeId", "description": "<code>Node</code>'s id, corresponds to DOM.Node.backendNodeId." },
                     { "name": "childNodeIndexes", "type": "array", "items": { "type": "integer" }, "optional": true, "description": "The indexes of the node's child nodes in the <code>domNodes</code> array returned by <code>getSnapshot</code>, if any." },
                     { "name": "attributes", "type": "array", "items": { "$ref": "NameValue" }, "optional": true, "description": "Attributes of an <code>Element</code> node." },
                     { "name": "pseudoElementIndexes", "type": "array", "items": { "type": "integer" }, "optional": true, "description": "Indexes of pseudo elements associated with this node in the <code>domNodes</code> array returned by <code>getSnapshot</code>, if any." },
                     { "name": "layoutNodeIndex", "type": "integer", "optional": true, "description": "The index of the node's related layout tree node in the <code>layoutTreeNodes</code> array returned by <code>getSnapshot</code>, if any." },
                     { "name": "documentURL", "type": "string", "optional": true, "description": "Document URL that <code>Document</code> or <code>FrameOwner</code> node points to." },
                     { "name": "baseURL", "type": "string", "optional": true, "description": "Base URL that <code>Document</code> or <code>FrameOwner</code> node uses for URL completion." },
                     { "name": "contentLanguage", "type": "string", "optional": true, "description": "Only set for documents, contains the document's content language." },
                     { "name": "publicId", "type": "string", "optional": true, "description": "<code>DocumentType</code> node's publicId." },
                     { "name": "systemId", "type": "string", "optional": true, "description": "<code>DocumentType</code> node's systemId." },
@@ skipping 1490 matching lines @@
                 "parameters": [
                     { "name": "windowId", "$ref": "WindowID", "description": "Browser window id." }
                 ],
                 "returns": [
                     { "name": "bounds", "$ref": "Bounds", "description": "Bounds information of the window. When window state is 'minimized', the restored window position and size are returned." }
                 ]
             }
         ]
     }]
 }