New post-sideload UI:

chrome/browser/ui/global_error/global_error.h

 // Copyright (c) 2012 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_UI_GLOBAL_ERROR_GLOBAL_ERROR_H_
 #define CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_H_
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 
 class Browser;
 class GlobalErrorBubbleViewBase;
 
 // This object describes a single global error.
 class GlobalError : public base::SupportsWeakPtr<GlobalError> {
  public:
+  enum Severity {
+    SEVERITY_LOW,
+    SEVERITY_MEDIUM,
+    SEVERITY_HIGH,
+    SEVERITY_CRITICAL,
+    NUM_SEVERITY,

[sail, 2012/10/16 21:26:32]

It seems like this isn't used anywhere. Can we remove it?
In general, it's better not to have this. This allows us to have switch
statements without having to add a NOTREACHED() clause.

[Matt Perry, 2012/10/16 21:36:31]

Done.

+  };
+
   GlobalError();
   virtual ~GlobalError();
 
   // Returns true if a badge should be drawn on the wrench menu button.
   virtual bool HasBadge() = 0;
   // Returns the resource ID of the badge icon.
   virtual int GetBadgeResourceID();
+  // Returns the error's severity level. If there are multiple errors,
+  // the error with the highest severity will display in the menu. If not
+  // overridden, this is based on the badge resource ID.
+  virtual Severity GetSeverity();
 
   // Returns true if a menu item should be added to the wrench menu.
   virtual bool HasMenuItem() = 0;
   // Returns the command ID for the menu item.
   virtual int MenuItemCommandID() = 0;
   // Returns the label for the menu item.
   virtual string16 MenuItemLabel() = 0;
   // Returns the resource ID for the menu item icon.
   virtual int MenuItemIconResourceID();
   // Called when the user clicks on the menu item.
@@ skipping 33 matching lines @@
 
 
  private:
   bool has_shown_bubble_view_;
   GlobalErrorBubbleViewBase* bubble_view_;
 
   DISALLOW_COPY_AND_ASSIGN(GlobalError);
 };
 
 #endif  // CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_H_