Fix problems correctly invalidating/repainting when our updated paint rect fo...

chrome/browser/renderer_host/render_widget_host_view_win.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 215 matching lines @@
   // (See "chrome/browser/ime_input.h" for its details.)
   ImeInput ime_input_;
 
   // Represents whether or not this browser process is receiving status
   // messages about the focused edit control from a renderer process.
   bool ime_notification_;
 
   // true if the View is not visible.
   bool is_hidden_;
 
+  // True if we're in the midst of a paint operation and should respond to
+  // DidPaintRect() notifications by merely invalidating.  See comments on
+  // render_widget_host_view.h:DidPaintRect().
+  bool about_to_validate_and_paint_;
+
   // true if the View should be closed when its HWND is deactivated (used to
   // support SELECT popups which are closed when they are deactivated).
   bool close_on_deactivate_;
 
   // Tooltips
   // The text to be shown in the tooltip, supplied by the renderer.
   std::wstring tooltip_text_;
   // The tooltip control hwnd
   HWND tooltip_hwnd_;
   // Whether or not a tooltip is currently visible. We use this to track
@@ skipping 20 matching lines @@
 
   // Whether the renderer is made accessible.
   // TODO(jcampan): http://b/issue?id=1432077 This is a temporary work-around
   // until that bug is fixed.
   bool renderer_accessible_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_