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

Source/devtools/protocol.json

Index: Source/devtools/protocol.json
diff --git a/Source/devtools/protocol.json b/Source/devtools/protocol.json
index 205f306816462c8238ec3aabff4f07a76dca5181..80daf0b65c4785478e72ff2cb92000cc90445ab6 100644
--- a/Source/devtools/protocol.json
+++ b/Source/devtools/protocol.json
@@ -3647,7 +3647,8 @@
                     { "name": "callUID", "type": "number", "description": "Call UID." },
                     { "name": "children", "type": "array", "items": { "$ref": "CPUProfileNode" }, "description": "Child nodes." },
                     { "name": "deoptReason", "type": "string", "description": "The reason of being not optimized. The function may be deoptimized or marked as don't optimize."},
-                    { "name": "id", "type": "integer", "description": "Unique id of the node." }
+                    { "name": "id", "type": "integer", "description": "Unique id of the node." },
+                    { "name": "lineTicks", "type": "array", "items": { "$ref": "LineTickInfo" }, "description": "An array of source line ticks." }

[yurys, 2014/11/17 08:12:57]

Since we'd like to eventually have column info as well (for the purpose of
profiling minified scripts) I'd rather name it something like positionTicks and
PositionTickInfo so that we don't have to rename it later.

[Pan, 2014/11/17 08:49:52]

thanks, done.

                 ]
             },
             {
@@ -3661,6 +3662,15 @@
                     { "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": "LineTickInfo",
+                "type": "object",
+                "description": "Specifies a number of samples attributed to a certain source line.",
+                "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": [