DevTools: implement console.timeline/timelineEnd.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 792 matching lines @@
                 "hidden": true
             },
             {
                 "id": "ConsoleMessage",
                 "type": "object",
                 "description": "Console message.",
                 "properties": [
                     { "name": "source", "type": "string", "enum": ["xml", "javascript", "network", "console-api", "storage", "appcache", "rendering", "css", "security", "other", "deprecation"], "description": "Message source." },
                     { "name": "level", "type": "string", "enum": ["log", "warning", "error", "debug"], "description": "Message severity." },
                     { "name": "text", "type": "string", "description": "Message text." },
-                    { "name": "type", "type": "string", "optional": true, "enum": ["log", "dir", "dirxml", "table", "trace", "clear", "startGroup", "startGroupCollapsed", "endGroup", "assert", "timing", "profile", "profileEnd"], "description": "Console message type." },
+                    { "name": "type", "type": "string", "optional": true, "enum": ["log", "dir", "dirxml", "table", "trace", "clear", "startGroup", "startGroupCollapsed", "endGroup", "assert", "profile", "profileEnd"], "description": "Console message type." },
                     { "name": "url", "type": "string", "optional": true, "description": "URL of the message origin." },
                     { "name": "line", "type": "integer", "optional": true, "description": "Line number in the resource that generated this message." },
                     { "name": "column", "type": "integer", "optional": true, "description": "Column number in the resource that generated this message." },
                     { "name": "repeatCount", "type": "integer", "optional": true, "description": "Repeat count for repeated messages." },
                     { "name": "parameters", "type": "array", "items": { "$ref": "Runtime.RemoteObject" }, "optional": true, "description": "Message parameters in case of the formatted message." },
                     { "name": "stackTrace", "$ref": "StackTrace", "optional": true, "description": "JavaScript stack trace for assertions and error messages." },
                     { "name": "networkRequestId", "$ref": "Network.RequestId", "optional": true, "description": "Identifier of the network request associated with this message." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp, when this message was fired.", "hidden": true }
                 ]
             },
@@ skipping 1986 matching lines @@
                     { "name": "children", "type": "array", "optional": true, "items": { "$ref": "TimelineEvent" }, "description": "Nested records." },
                     { "name": "counters", "$ref": "DOMCounters", "optional": true, "hidden": true, "description": "Current values of DOM counters." },
                     { "name": "usedHeapSize", "type": "integer", "optional": true, "hidden": true, "description": "Current size of JS heap." },
                     { "name": "nativeHeapStatistics", "type": "object", "optional": true, "hidden": true, "description": "Native heap statistics." }
                 ],
                 "description": "Timeline record contains information about the recorded activity."
             }
         ],
         "commands": [
             {
+                "name": "enable",
+                "description": "Enables timeline. After this call, timeline can be started from within the page (for example upon console.timeline)."
+            },
+            {
+                "name": "disable",
+                "description": "Disables timeline."
+            },
+            {
                 "name": "start",
                 "parameters": [
                     { "name": "maxCallStackDepth", "optional": true, "type": "integer", "description": "Samples JavaScript stack traces up to <code>maxCallStackDepth</code>, defaults to 5." },
                     { "name": "includeDomCounters", "optional": true, "type": "boolean", "hidden": true, "description": "Whether DOM counters data should be included into timeline events." },
                     { "name": "includeNativeMemoryStatistics", "optional": true, "type": "boolean", "hidden": true, "description": "Whether native memory usage statistics should be reported as part of timeline events." }
 
                 ],
                 "description": "Starts capturing instrumentation events."
             },
             {
                 "name": "stop",
                 "description": "Stops capturing instrumentation events."
             }
         ],
         "events": [
             {
                 "name": "eventRecorded",
                 "parameters": [
                     { "name": "record", "$ref": "TimelineEvent", "description": "Timeline event record data." }
                 ],
                 "description": "Fired for every instrumentation event while timeline is started."
+            },
+            {
+                "name": "started",
+                "parameters": [
+                    { "name": "consoleTimeline", "type": "boolean", "optional": true, "description": "If specified, identifies that timeline was started using console.timeline() call." }
+                ],
+                "description": "Fired when timeline is started.",
+                "hidden": true
+            },
+            {
+                "name": "stopped",
+                "parameters": [
+                    { "name": "consoleTimeline", "type": "boolean", "optional": true, "description": "If specified, identifies that timeline was started using console.timeline() call." }
+                ],
+                "description": "Fired when timeline is stopped.",
+                "hidden": true
             }
         ]
     },
     {
         "domain": "Debugger",
         "description": "Debugger domain exposes JavaScript debugging capabilities. It allows setting and removing breakpoints, stepping through execution, exploring stack traces, etc.",
         "types": [
             {
                 "id": "BreakpointId",
                 "type": "string",
@@ skipping 1116 matching lines @@
                 "parameters": [
                     { "name": "value", "type": "array", "items": { "type": "object" } }
                 ]
             },
             {
                 "name": "tracingComplete"
             }
         ]
     }]
 }