Add source line info for JS Profiler ticks to debug protocol.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 3629 matching lines @@
                 "properties": [
                     { "name": "functionName", "type": "string", "description": "Function name." },
                     { "name": "scriptId", "$ref": "Debugger.ScriptId", "description": "Script identifier." },
                     { "name": "url", "type": "string", "description": "URL." },
                     { "name": "lineNumber", "type": "integer", "description": "1-based line number of the function start position." },
                     { "name": "columnNumber", "type": "integer", "description": "1-based column number of the function start position." },
                     { "name": "hitCount", "type": "integer", "description": "Number of samples where this node was on top of the call stack." },
                     { "name": "callUID", "type": "number", "description": "Call UID." },
                     { "name": "children", "type": "array", "items": { "$ref": "CPUProfileNode" }, "description": "Child nodes." },
                     { "name": "deoptReason", "type": "string", "description": "The reason of being not optimized. The function may be deoptimized or marked as don't optimize."},
-                    { "name": "id", "type": "integer", "description": "Unique id of the node." }
+                    { "name": "id", "type": "integer", "description": "Unique id of the node." },
+                    { "name": "positionTicks", "type": "array", "items": { "$ref": "PositionTickInfo" }, "description": "An array of source position ticks." }
                 ]
             },
             {
                 "id": "CPUProfile",
                 "type": "object",
                 "description": "Profile.",
                 "properties": [
                     { "name": "head", "$ref": "CPUProfileNode" },
                     { "name": "startTime", "type": "number", "description": "Profiling start time in seconds." },
                     { "name": "endTime", "type": "number", "description": "Profiling end time in seconds." },
                     { "name": "samples", "optional": true, "type": "array", "items": { "type": "integer" }, "description": "Ids of samples top nodes." },
                     { "name": "timestamps", "optional": true, "type": "array", "items": { "type": "number" }, "description": "Timestamps of the samples in microseconds." }
                 ]
+            },
+            {
+                "id": "PositionTickInfo",
+                "type": "object",
+                "description": "Specifies a number of samples attributed to a certain source position.",
+                "properties": [
+                    { "name": "line", "type": "integer", "description": "Source line number (1-based)." },
+                    { "name": "ticks", "type": "integer", "description": "Number of samples attributed to the source line." }
+                ]
             }
         ],
         "commands": [
             {
                 "name": "enable"
             },
             {
                 "name": "disable"
             },
             {
@@ skipping 870 matching lines @@
                     { "name": "isRunning", "type": "boolean", "description": "If the animation player is still running." }
                 ],
                 "description": "Gets the state of an AnimationPlayer.",
                 "hidden": true
             }
         ],
         "events": [
         ]
     }]
 }