Bug 1436614 - Report ghost windows in Memory.jsm. r=mconley

This adds a 'ghosts' field to the object returned by Memory.summary.

--HG--
extra : rebase_source : 9bef4f795615aad9a98b12be6277124bd88cbcd2

toolkit/content/process-content.js

@@ -49,11 +49,13 @@ if (gInContentProcess) {
                      .getService(Ci.nsIMemoryReporterManager);
       let rss = memMgr.resident;
       let uss = memMgr.residentUnique;
+      let ghosts = memMgr.ghostWindows;
       Services.cpmm.sendAsyncMessage("Memory:Summary", {
         pid,
         summary: {
           uss,
           rss,
+          ghosts,
         }
       });
     },

toolkit/modules/Memory.jsm

@@ -22,10 +22,12 @@ this.Memory = {
    *   "parent": {
    *     uss: <int>,
    *     rss: <int>,
+   *     ghosts: <int>,
    *   },
    *   <pid>: {
    *     uss: <int>,
    *     rss: <int>,
+   *     ghosts: <int>,
    *   },
    *   ...
    * }
@@ -65,7 +67,8 @@ this.Memory = {
                    .getService(Ci.nsIMemoryReporterManager);
     let rss = memMgr.resident;
     let uss = memMgr.residentUnique;
-    this._summaries.Parent = { uss, rss };
+    let ghosts = memMgr.ghostWindows;
+    this._summaries.Parent = { uss, rss, ghosts };
     this._pendingResolve(this._summaries);
     this._pendingResolve = null;
     this._summaries = null;