[DevTools] Move Timestamp to Runtime, measure it in milliseconds.

third_party/WebKit/Source/platform/v8_inspector/js_protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Runtime",
         "description": "Runtime domain exposes JavaScript runtime by means of remote evaluation and mirror objects. Evaluation results are returned as mirror object that expose object type, string representation and unique identifier that can be used for further object reference. Original objects are maintained in memory unless they are either explicitly released or are released along with the other objects in their object group.",
         "types": [
             {
                 "id": "ScriptId",
                 "type": "string",
                 "description": "Unique script identifier."
@@ skipping 127 matching lines @@
                 "properties": [
                     { "name": "text", "type": "string", "description": "Exception text." },
                     { "name": "url", "type": "string", "optional": true, "description": "URL of the message origin." },
                     { "name": "scriptId", "type": "string", "optional": true, "description": "Script ID of the message origin." },
                     { "name": "lineNumber", "type": "integer", "optional": true, "description": "Line number in the resource that generated this message. (0-based)." },
                     { "name": "columnNumber", "type": "integer", "optional": true, "description": "Column number in the resource that generated this message. (0-based)." },
                     { "name": "stack", "$ref": "StackTrace", "optional": true, "description": "JavaScript stack trace for assertions and error messages." }
                 ]
             },
             {
+                "id": "Timestamp",
+                "type": "number",
+                "description": "Number of milliseconds since epoch.",
+                "hidden": true
+            },
+            {
                 "id": "CallFrame",
                 "type": "object",
                 "description": "Stack entry for runtime errors and assertions.",
                 "properties": [
                     { "name": "functionName", "type": "string", "description": "JavaScript function name." },
                     { "name": "scriptId", "$ref": "ScriptId", "description": "JavaScript script id." },
                     { "name": "url", "type": "string", "description": "JavaScript script name or url." },
                     { "name": "lineNumber", "type": "integer", "description": "JavaScript script line number (0-based)." },
                     { "name": "columnNumber", "type": "integer", "description": "JavaScript script column number (0-based)." }
                 ]
@@ skipping 148 matching lines @@
             },
             {
                 "name": "executionContextsCleared",
                 "description": "Issued when all executionContexts were cleared in browser"
             },
             {
                 "name": "exceptionThrown",
                 "description": "Issued when exception was thrown and unhandled.",
                 "parameters": [
                     { "name": "exceptionId", "type": "integer", "description": "Exception id." },
-                    { "name": "timestamp", "type": "number", "description": "Number of milliseconds since epoch. TODO(dgozman): unify with Console.Timestamp" },
+                    { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp of the exception." },
                     { "name": "details", "$ref": "ExceptionDetails" },
                     { "name": "exception", "$ref": "RemoteObject", "optional": true, "description": "Exception object." },
                     { "name": "executionContextId", "$ref": "ExecutionContextId", "optional": true, "description": "Identifier of the context where exception happened." }
                 ],
                 "hidden": true
             },
             {
                 "name": "exceptionRevoked",
                 "description": "Issued when unhandled exception was revoked.",
                 "parameters": [
-                    { "name": "timestamp", "type": "number", "description": "Number of milliseconds since epoch. TODO(dgozman): unify with Console.Timestamp" },
                     { "name": "message", "type": "string", "description": "Message describing why exception was revoked." },
                     { "name": "exceptionId", "type": "integer", "description": "The id of revoked exception, as reported in <code>exceptionUnhandled</code>." }
                 ],
                 "hidden": true
             },
             {
                 "name": "consoleAPICalled",
                 "description": "Issued when console API was called.",
                 "parameters": [
                     { "name": "type", "type": "string", "enum": ["log", "debug", "info", "error", "warning", "dir", "dirxml", "table", "trace", "clear", "startGroup", "startGroupCollapsed", "endGroup", "assert", "profile", "profileEnd"], "description": "Type of the call." },
                     { "name": "args", "type": "array", "items": { "$ref": "RemoteObject" }, "description": "Call arguments." },
                     { "name": "executionContextId", "$ref": "ExecutionContextId", "description": "Identifier of the context where the call was made." },
-                    { "name": "timestamp", "type": "number", "description": "Number of milliseconds since epoch. TODO(dgozman): unify with Console.Timestamp" },
+                    { "name": "timestamp", "$ref": "Timestamp", "description": "Call timestamp." },
                     { "name": "stackTrace", "$ref": "StackTrace", "optional": true, "description": "Stack trace captured when the call was made." }
                 ],
                 "hidden": true
             },
             {
                 "name": "inspectRequested",
                 "parameters": [
                     { "name": "object", "$ref": "RemoteObject" },
                     { "name": "hints", "type": "object" }
                 ],
@@ skipping 362 matching lines @@
                 "description": "Fired when the virtual machine resumed execution."
             }
         ]
     },
     {
         "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",
-                "type": "number",
-                "description": "Number of seconds since epoch.",
-                "hidden": true
-            },
-            {
                 "id": "ConsoleMessage",
                 "type": "object",
                 "description": "Console message.",
                 "properties": [
                     { "name": "source", "type": "string", "enum": ["xml", "javascript", "network", "console-api", "storage", "appcache", "rendering", "security", "other", "deprecation", "worker"], "description": "Message source." },
                     { "name": "level", "type": "string", "enum": ["log", "warning", "error", "debug", "info"], "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", "profile", "profileEnd"], "description": "Never present. Use Runtime.consoleAPICalled instead." },
                     { "name": "scriptId", "type": "string", "optional": true, "description": "Script ID of the message origin." },
                     { "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": "Never present. Use Runtime.consoleAPICalled instead." },
                     { "name": "stack", "$ref": "Runtime.StackTrace", "optional": true, "description": "JavaScript stack trace for assertions and error messages." },
                     { "name": "networkRequestId", "type": "string", "optional": true, "description": "Identifier of the network request associated with this message." },
-                    { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp, when this message was fired.", "hidden": true },
+                    { "name": "timestamp", "$ref": "Runtime.Timestamp", "description": "Timestamp, when this message was fired.", "hidden": true },
                     { "name": "executionContextId", "$ref": "Runtime.ExecutionContextId", "optional": true, "description": "Identifier of the context where this message was created", "hidden": true },
                     { "name": "workerId", "type": "string", "optional": true, "description": "Identifier of the worker this message came from.", "hidden": true }
                 ]
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables console domain, sends the messages collected so far to the client by means of the <code>messageAdded</code> notification."
             },
@@ skipping 11 matching lines @@
                 "name": "messageAdded",
                 "parameters": [
                     { "name": "message", "$ref": "ConsoleMessage", "description": "Console message that has been added." }
                 ],
                 "description": "Issued when new console message is added."
             },
             {
                 "name": "messageRepeatCountUpdated",
                 "parameters": [
                     { "name": "count", "type": "integer", "description": "New repeat count value." },
-                    { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp of most recent message in batch.", "hidden": true }
+                    { "name": "timestamp", "$ref": "Runtime.Timestamp", "description": "Timestamp of most recent message in batch.", "hidden": true }
                 ],
                 "description": "Is not issued. Will be gone in the future versions of the protocol.",
                 "deprecated": true
             },
             {
                 "name": "messagesCleared",
                 "description": "Not issued.",
                 "deprecated": true
             }
         ]
@@ skipping 217 matching lines @@
             {
                 "name": "heapStatsUpdate",
                 "description": "If heap objects tracking has been started then backend may send update for one or more fragments",
                 "parameters": [
                     { "name": "statsUpdate", "type": "array", "items": { "type": "integer" }, "description": "An array of triplets. Each triplet describes a fragment. The first integer is the fragment index, the second integer is a total count of objects for the fragment, the third integer is a total size of the objects for the fragment."}
                 ]
             }
         ]
     }]
 }