Fix paint glitch on load/unload browser action

chrome/browser/views/browser_actions_container.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/views/browser_actions_container.h"
 
 #include "app/gfx/canvas.h"
 #include "app/resource_bundle.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
@@ skipping 257 matching lines @@
            "Asked to add a browser action view for an extension that already "
            "exists.";
   }
 #endif
   if (!extension->browser_action())
     return;
 
   BrowserActionView* view = new BrowserActionView(extension, this);
   browser_action_views_.push_back(view);
   AddChildView(view);
+  if (GetParent()) 
+    GetParent()->SchedulePaint();
 }
 
 void BrowserActionsContainer::RemoveBrowserAction(Extension* extension) {
   if (!extension->browser_action())
     return;
 
   for (std::vector<BrowserActionView*>::iterator iter =
        browser_action_views_.begin(); iter != browser_action_views_.end();
        ++iter) {
     if ((*iter)->button()->extension() == extension) {
       RemoveChildView(*iter);
       browser_action_views_.erase(iter);
+      if (GetParent()) 
+        GetParent()->SchedulePaint();
       return;
     }
   }
 
-   NOTREACHED() << "Asked to remove a browser action view that doesn't exist.";
+  NOTREACHED() << "Asked to remove a browser action view that doesn't exist.";
 }
 
 void BrowserActionsContainer::DeleteBrowserActionViews() {
   if (!browser_action_views_.empty()) {
     for (size_t i = 0; i < browser_action_views_.size(); ++i)
       RemoveChildView(browser_action_views_[i]);
     STLDeleteContainerPointers(browser_action_views_.begin(),
                                browser_action_views_.end());
     browser_action_views_.clear();
   }
@@ skipping 147 matching lines @@
       std::min(static_cast<int>(browser_action_views_.size()),
                kMinimumNumberOfVisibleBrowserActions) * kButtonSize;
 
   // Even if available_width is <= 0, we still return at least the |min_width|.
   if (available_width <= 0)
     return min_width;
 
   return std::max(min_width, available_width - available_width % kButtonSize +
                   kHorizontalPadding * 2);
 }