import changes from win7-7/UXP:

bug1347737, bug1365982, bug1367206

dom/base/nsDocument.cpp

@@ -11943,7 +11943,8 @@ nsIDocument::DocAddSizeOfExcludingThis(nsWindowSizes* aWindowSizes) const
                                        &aWindowSizes->mLayoutPresShellSize,
                                        &aWindowSizes->mLayoutStyleSetsSize,
                                        &aWindowSizes->mLayoutTextRunsSize,
-                                       &aWindowSizes->mLayoutPresContextSize);
+                                       &aWindowSizes->mLayoutPresContextSize,
+                                       &aWindowSizes->mLayoutFramePropertiesSize);
   }
 
   aWindowSizes->mPropertyTablesSize +=

dom/base/nsWindowMemoryReporter.cpp

@@ -400,6 +400,12 @@ CollectWindowReports(nsGlobalWindow *aWindow,
   aWindowTotalSizes->mLayoutPresContextSize +=
     windowSizes.mLayoutPresContextSize;
 
+  REPORT_SIZE("/layout/frame-properties", windowSizes.mLayoutFramePropertiesSize,
+         "Memory used for frame properties attached to frames "
+         "within a window.");
+  aWindowTotalSizes->mLayoutFramePropertiesSize +=
+    windowSizes.mLayoutFramePropertiesSize;
+
   // There are many different kinds of frames, but it is very likely
   // that only a few matter.  Implement a cutoff so we don't bloat
   // about:memory with many uninteresting entries.
@@ -563,6 +569,9 @@ nsWindowMemoryReporter::CollectReports(nsIHandleReportCallback* aHandleReport,
   REPORT("window-objects/layout/pres-contexts", windowTotalSizes.mLayoutPresContextSize,
          "This is the sum of all windows' 'layout/pres-contexts' numbers.");
 
+  REPORT("window-objects/layout/frame-properties", windowTotalSizes.mLayoutFramePropertiesSize,
+         "This is the sum of all windows' 'layout/frame-properties' numbers.");
+
   size_t frameTotal = 0;
 #define FRAME_ID(classname)                \
   frameTotal += windowTotalSizes.mArenaStats.FRAME_ID_STAT_FIELD(classname);

dom/base/nsWindowMemoryReporter.h

@@ -33,6 +33,7 @@ class nsWindowSizes {
   macro(Style, mLayoutStyleSetsSize) \
   macro(Other, mLayoutTextRunsSize) \
   macro(Other, mLayoutPresContextSize) \
+  macro(Other, mLayoutFramePropertiesSize) \
   macro(Other, mPropertyTablesSize) \
 
 public: