Revert of [DevTools] Move SystemInfo domain to generated handler

content/browser/devtools/browser_protocol.json

 {
     "version": { "major": "1", "minor": "0" },
     "domains": [{
         "domain": "SystemInfo",
         "description": "The SystemInfo domain defines methods and events for querying low-level system information.",
         "hidden": true,
         "types": [
             {
                 "id": "GPUDevice",
                 "type": "object",
                 "properties": [
                     { "name": "vendorId", "type": "number", "description": "PCI ID of the GPU vendor, if available; 0 otherwise." },
                     { "name": "deviceId", "type": "number", "description": "PCI ID of the GPU device, if available; 0 otherwise." },
                     { "name": "vendorString", "type": "string", "description": "String description of the GPU vendor, if the PCI ID is not available." },
                     { "name": "deviceString", "type": "string", "description": "String description of the GPU device, if the PCI ID is not available." }
                 ],
                 "description": "Describes a single graphics processor (GPU)."
             },
             {
                 "id": "GPUInfo",
                 "type": "object",
                 "properties": [
                     { "name": "devices", "type": "array", "items": { "$ref": "GPUDevice" }, "description": "The graphics devices on the system. Element 0 is the primary GPU." },
                     { "name": "auxAttributes", "type": "object", "optional": "true", "description": "An optional dictionary of additional GPU related attributes." },
                     { "name": "featureStatus", "type": "object", "optional": "true", "description": "An optional dictionary of graphics features and their status." },
                     { "name": "driverBugWorkarounds", "type": "array", "items": { "type": "string" }, "description": "An optional array of GPU driver bug workarounds." }
                 ],
                 "description": "Provides information about the GPU(s) on the system."
+            },
+            {
+                "id": "SystemInfo",
+                "type": "object",
+                "properties": [
+                    { "name": "gpu", "$ref": "GPUInfo", "description": "Information about the GPUs on the system." },
+                    { "name": "modelName", "type": "string", "description": "A platform-dependent description of the model of the machine. On Mac OS, this is, for example, 'MacBookPro 10.1'. Will be the empty string if not supported." }
+                ],
+                "description": "Provides information about the system."
             }
         ],
         "commands": [
             {
                 "name": "getInfo",
                 "description": "Returns information about the system.",
                 "returns": [
-                    { "name": "gpu", "$ref": "GPUInfo", "description": "Information about the GPUs on the system." },
-                    { "name": "modelName", "type": "string", "description": "A platform-dependent description of the model of the machine. On Mac OS, this is, for example, 'MacBookPro'. Will be the empty string if not supported." },
-                    { "name": "modelVersion", "type": "string", "description": "A platform-dependent description of the version of the machine. On Mac OS, this is, for example, '10.1'. Will be the empty string if not supported." }
+                    { "name": "info", "$ref": "SystemInfo", "description": "Information about the system." }
                 ],
                 "handlers": ["browser"]
             }
         ]
     },
     {
         "domain": "Tethering",
         "description": "The Tethering domain defines methods and events for browser port binding.",
         "hidden": true,
         "commands": [
@@ skipping 22 matching lines @@
                 "description": "Informs that port was successfully bound and got a specified connection id.",
                 "parameters": [
                     {"name": "port", "type": "integer", "description": "Port number that was successfully bound." },
                     {"name": "connectionId", "type": "string", "description": "Connection id to be used." }
                 ],
                 "handlers": ["browser"]
             }
         ]
     }]
 }