Bug 815829 - Add MEMORY_VSIZE to telemetry. r=jlebar.

--HG--
extra : rebase_source : af1360715d77f262aeebc792c4314fe451a4b1a6

toolkit/components/telemetry/Histograms.json

@@ -166,6 +166,13 @@
     "n_buckets": 50,
     "description": "Resident memory size (KB)"
   },
+  "MEMORY_VSIZE": {
+    "kind": "exponential",
+    "low": "32 * 1024",
+    "high": "16 * 1024 * 1024",
+    "n_buckets": 100,
+    "description": "Virtual memory size (KB)"
+  },
   "MEMORY_JS_COMPARTMENTS_SYSTEM": {
     "kind": "exponential",
     "high": "1000",

toolkit/components/telemetry/TelemetryPing.js

@@ -53,6 +53,7 @@ const MEM_HISTOGRAMS = {
   "js-compartments/user": "MEMORY_JS_COMPARTMENTS_USER",
   "explicit": "MEMORY_EXPLICIT",
   "resident": "MEMORY_RESIDENT",
+  "vsize": "MEMORY_VSIZE",
   "storage-sqlite": "MEMORY_STORAGE_SQLITE",
   "images-content-used-uncompressed":
     "MEMORY_IMAGES_CONTENT_USED_UNCOMPRESSED",