Adds enableVirtualTime and setVirtualTimePolicy To Emulation domain.

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

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 743 matching lines @@
                 ],
                 "description": "Enables CPU throttling to emulate slow CPUs."
             },
             {
                 "name": "canEmulate",
                 "description": "Tells whether emulation is supported.",
                 "returns": [
                     { "name": "result", "type": "boolean", "description": "True if emulation is supported." }
                 ],
                 "handlers": ["browser"]
+            },
+            {
+                "name": "enableVirtualTime",
+                "description": "Turns on virtualTime.",
+                "handlers": ["renderer"]
+            },
+            {
+                "name": "setVirtualTimePolicy",

[Sami, 2016/06/29 16:22:27]

Would renderer suspension also fall under this? Also wondering about explicit
BeginFrame control.

[alex clarke (OOO till 29th), 2016/06/29 17:08:31]

Potentially yes.  I think we need to prototype that to be sure however.

+                "description": "Sets the current virtual time policy.",
+                "parameters": [
+                    {
+                        "enum": [
+                            "advance",
+                            "pause",
+                            "pauseIfNetworkFetchesPending"
+                        ],
+                        "type": "string",
+                        "name": "policy"
+                    }
+                ],
+                "handlers": ["renderer"]
             }
         ]
     },
     {
         "domain": "Console",
         "description": "Console domain defines methods and events for interaction with the JavaScript console. Console collects messages created by means of the <a href='http://getfirebug.com/wiki/index.php/Console_API'>JavaScript Console API</a>. One needs to enable this domain using <code>enable</code> command in order to start receiving the console messages. Browser collects messages issued while console domain is not enabled as well and reports them using <code>messageAdded</code> notification upon enabling.",
         "dependencies": ["Runtime"],
         "types": [
             {
                 "id": "Timestamp",
@@ skipping 3517 matching lines @@
                 "description": "Dispatches protocol message from the target with given id.",
                 "parameters": [
                     { "name": "targetId", "$ref": "TargetID" },
                     { "name": "message", "type": "string" }
                 ],
                 "handlers": ["browser"]
             }
         ]
     }]
 }