[DevTools] Promote Device Mode v2 to default experiments.

third_party/WebKit/Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 425 matching lines @@
                 "name": "handleJavaScriptDialog",
                 "description": "Accepts or dismisses a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload).",
                 "parameters": [
                     { "name": "accept", "type": "boolean", "description": "Whether to accept or dismiss the dialog." },
                     { "name": "promptText", "type": "string", "optional": true, "description": "The text to enter into the dialog prompt before accepting. Used only if this is a prompt dialog." }
                 ],
                 "hidden": true,
                 "handlers": ["browser"]
             },
             {
-                "name": "setShowViewportSizeOnResize",
-                "description": "Paints viewport size upon main frame resize.",
-                "parameters": [
-                    { "name": "show", "type": "boolean", "description": "Whether to paint size or not." },
-                    { "name": "showGrid", "type": "boolean", "optional": true, "description": "Whether to paint grid as well." }
-                ],
-                "hidden": true
-            },
-            {
                 "name": "setColorPickerEnabled",
                 "parameters": [
                     { "name": "enabled", "type": "boolean", "description": "Shows / hides color picker" }
                 ],
                 "description": "Shows / hides color picker",
                 "hidden": true,
                 "handlers": ["browser"]
             },
             {
                 "name": "setOverlayMessage",
@@ skipping 4844 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }