added the menus and code to dump reflow stats when they are turned on.

webshell/tests/viewer/nsBrowserWindow.cpp

@@ -3117,6 +3117,24 @@ nsBrowserWindow::DumpStyleContexts(FILE* out)
   }
 }
 
+void
+nsBrowserWindow::DumpReflowStats(FILE* out)
+{
+  nsIPresShell* shell = GetPresShell();
+  if (nsnull != shell) {
+#ifdef MOZ_REFLOW_PERF
+    shell->DumpReflows();
+#else
+    fprintf(out,"***********************************\n");
+    fprintf(out, "Sorry, you have built with MOZ_REFLOW_PERF=1\n");
+    fprintf(out,"***********************************\n");
+#endif
+    NS_RELEASE(shell);
+  } else {
+    fputs("null pres shell\n", out);
+  }
+}
+
 void
 nsBrowserWindow::ToggleFrameBorders()
 {
@@ -3447,6 +3465,11 @@ nsBrowserWindow::DispatchDebugMenu(PRInt32 aID)
       result = nsEventStatus_eConsumeNoDefault;
       break;
 
+    case VIEWER_DEBUG_DUMP_REFLOW_TOTS:
+      DumpReflowStats();
+      result = nsEventStatus_eConsumeNoDefault;
+      break;
+
     case VIEWER_SHOW_CONTENT_SIZE:
       ShowContentSize();
       result = nsEventStatus_eConsumeNoDefault;

webshell/tests/viewer/nsBrowserWindow.h

@@ -179,6 +179,7 @@ public:
   void DumpWebShells(FILE *out = stdout);
   void DumpStyleSheets(FILE *out = stdout);
   void DumpStyleContexts(FILE *out = stdout);
+  void DumpReflowStats(FILE *out = stdout);
   void ToggleFrameBorders();
   void ToggleVisualEventDebugging();
   void ToggleBoolPrefAndRefresh(const char * aPrefName);

webshell/tests/viewer/resources.h

@@ -93,6 +93,7 @@
 #define VIEWER_GFX_LISTBOX_OFF      40083
 #define VIEWER_GFX_COMBOBOX_ON      40084
 #define VIEWER_GFX_COMBOBOX_OFF     40085
+#define VIEWER_DEBUG_DUMP_REFLOW_TOTS 40086
 
 #define VIEWER_TOGGLE_PAINT_FLASHING         40200
 #define VIEWER_TOGGLE_PAINT_DUMPING          40210

webshell/tests/viewer/viewer.rc

@@ -98,6 +98,7 @@ VIEWER MENU DISCARDABLE
     MENUITEM "Dump &Content", VIEWER_DUMP_CONTENT
     MENUITEM "Dump &Frames", VIEWER_DUMP_FRAMES
     MENUITEM "Dump &Views", VIEWER_DUMP_VIEWS
+    MENUITEM "Dump &Reflow Stats", VIEWER_DEBUG_DUMP_REFLOW_TOTS
     MENUITEM SEPARATOR
     MENUITEM "Dump &Style Sheets", VIEWER_DUMP_STYLE_SHEETS
     MENUITEM "Dump &Style Contexts", VIEWER_DUMP_STYLE_CONTEXTS