Implement ServiceWorkerRegistration related DevTools events [1/2 blink]

Source/devtools/protocol.json

Index: Source/devtools/protocol.json
diff --git a/Source/devtools/protocol.json b/Source/devtools/protocol.json
index 22901c1983bffe8ab945c028a984ada6d6e6b5fd..bcc4747a415df91596fd1c7216aedabee29df047 100644
--- a/Source/devtools/protocol.json
+++ b/Source/devtools/protocol.json
@@ -4053,7 +4053,31 @@
     {
         "domain": "ServiceWorker",
         "hidden": true,
-        "types": [],
+        "types": [
+            {
+                "id": "ServiceWorkerRegistration",
+                "type": "object",
+                "description": "ServiceWorker registration.",
+                "properties": [
+                    { "name": "registrationId", "type": "string" },
+                    { "name": "scopeURL", "type": "string" },
+                    { "name": "activeVersion", "optional": true, "$ref": "ServiceWorkerVersion" },
+                    { "name": "waitingVersion", "optional": true, "$ref": "ServiceWorkerVersion" },
+                    { "name": "installingVersion", "optional": true, "$ref": "ServiceWorkerVersion" }
+                ]
+            },
+            {
+                "id": "ServiceWorkerVersion",
+                "type": "object",
+                "description": "ServiceWorker version.",
+                "properties": [
+                    { "name": "versionId", "type": "string" },
+                    { "name": "scriptURL", "type": "string" },
+                    { "name": "runningStatus", "type": "string", "enum": ["stopped", "starting", "running", "stopping"] },
+                    { "name": "status", "type": "string", "enum": ["new", "installing", "installed", "activating", "activated", "redundant"] }
+                ]
+            }
+        ],
         "commands": [
             {
                 "name": "enable",
@@ -4084,6 +4108,18 @@
                     { "name": "workerId", "type": "string" }
                 ],
                 "handlers": ["browser"]
+            },
+            {
+                "name": "getRegistrations",
+                "async": true,
+                "parameters": [
+                    { "name": "origin", "type": "string", "description": "Security origin of requesting ServiceWorker registrations." }

[pfeldman, 2015/03/06 10:43:16]

What origin would we use?

I am not sure the pull model here is the way to go. In order to attach to the
workers, we'll need updates to be pushed. So I think what needs to happen is
upon "enable", all the registrations (or service workers) are sent to the
front-end along with their metainfo. Something like
workerRegistrationUpdated(registration). Then, as they change, updates will be
issued. Wdyt?

[horo, 2015/03/09 12:33:25]

Ah yes, I agree with you.

I changed to push model.

+                ],
+                "returns": [
+                    { "name": "registrations", "type": "array", "items": { "$ref": "ServiceWorkerRegistration" }, "description": "ServiceWorkerRegistrations related to the origin." }
+                ],
+                "description": "Returns the ServiceWorker registrations related to the origin. When origin is empty returns the all registrations.",
+                "handlers": ["browser"]
             }
         ],
         "events": [