DevTools: Add CSS.getPlatformFontsForNode in protocol.json

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "0" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 2446 matching lines @@
                 "type": "object",
                 "properties": [
                     { "name": "documentNodeId", "$ref": "DOM.NodeId", "description": "The document node id." },
                     { "name": "name", "type": "string", "description": "Named Flow identifier." },
                     { "name": "overset", "type": "boolean", "description": "The \"overset\" attribute of a Named Flow." },
                     { "name": "content", "type": "array", "items": { "$ref": "DOM.NodeId" }, "description": "An array of nodes that flow into the Named Flow." },
                     { "name": "regions", "type": "array", "items": { "$ref": "Region" }, "description": "An array of regions associated with the Named Flow." }
                 ],
                 "description": "This object represents a Named Flow.",
                 "hidden": true
+            },
+            {
+                "id": "PlatformFontUsage",
+                "type": "object",
+                "properties": [
+                    { "name": "familyName", "type": "string", "description": "Font's family name reported by platform."},
+                    { "name": "glyphCount", "type": "number", "description": "Amount of glyphs that were rendered with this font."}
+                ],
+                "description": "Information about amount of glyphs that were rendered with given font."
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables the CSS agent for the given page. Clients should not assume that the CSS agent has been enabled until the result of this command is received."
             },
             {
                 "name": "disable",
                 "description": "Disables the CSS agent for the given page."
@@ skipping 27 matching lines @@
                 "name": "getComputedStyleForNode",
                 "parameters": [
                     { "name": "nodeId", "$ref": "DOM.NodeId" }
                 ],
                 "returns": [
                     { "name": "computedStyle", "type": "array", "items": { "$ref": "CSSComputedStyleProperty" }, "description": "Computed style for the specified DOM node." }
                 ],
                 "description": "Returns the computed style for a DOM node identified by <code>nodeId</code>."
             },
             {
+                "name": "getPlatformFontsForNode",
+                "parameters": [
+                    { "name": "nodeId", "$ref": "DOM.NodeId" }
+                ],
+                "returns": [
+                    { "name": "fonts", "type": "array", "items": { "$ref": "PlatformFontUsage"}, "description": "Usage statistics for every employed platform font." }
+                ],
+                "description": "Requests information about platform fonts which we used to render child TextNodes in the given node.",
+                "hidden": true
+            },
+            {
                 "name": "getAllStyleSheets",
                 "returns": [
                     { "name": "headers", "type": "array", "items": { "$ref": "CSSStyleSheetHeader" }, "description": "Descriptor entries for all available stylesheets." }
                 ],
                 "description": "Returns metainfo entries for all known stylesheets."
             },
             {
                 "name": "getStyleSheet",
                 "parameters": [
                     { "name": "styleSheetId", "$ref": "StyleSheetId" }
@@ skipping 1335 matching lines @@
                 "parameters": [
                     { "name": "value", "type": "array", "items": { "type": "object" } }
                 ]
             },
             {
                 "name": "tracingComplete"
             }
         ]
     }]
 }