DevTools: add measurement units to profile tree headers.

third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js

Index: third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js
diff --git a/third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js b/third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js
index ae78647a3e3e08a346e4700929ea4dfc6d5fb53e..3a165a65836ab4514ca0b5f1982a342859718757 100644
--- a/third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js
+++ b/third_party/WebKit/Source/devtools/front_end/profiler/HeapProfileView.js
@@ -21,6 +21,20 @@ WebInspector.HeapProfileView = function(profileHeader)
 }
 
 WebInspector.HeapProfileView.prototype = {
+    /**
+     * @override
+     * @param {string} columnId
+     * @return {string}
+     */
+    columnHeader: function(columnId)
+    {
+        switch (columnId) {
+        case "self": return WebInspector.UIString("Self Size (bytes)");
+        case "total": return WebInspector.UIString("Total Size (bytes)");
+        }
+        return "";
+    },
+
     __proto__: WebInspector.ProfileView.prototype
 }