Remove a bunch of pre-MD toolbar code and assets.

chrome/browser/ui/toolbar/app_menu_icon_controller.h

Index: chrome/browser/ui/toolbar/app_menu_icon_controller.h
diff --git a/chrome/browser/ui/toolbar/app_menu_icon_controller.h b/chrome/browser/ui/toolbar/app_menu_icon_controller.h
index 05f9de6ef8fdb74c8e855288a837d6a688c14c29..81f6a759101430fa9b28754b8eec2eb7c134425d 100644
--- a/chrome/browser/ui/toolbar/app_menu_icon_controller.h
+++ b/chrome/browser/ui/toolbar/app_menu_icon_controller.h
@@ -6,7 +6,6 @@
 #define CHROME_BROWSER_UI_TOOLBAR_APP_MENU_ICON_CONTROLLER_H_
 
 #include "base/macros.h"
-#include "chrome/browser/ui/toolbar/app_menu_icon_painter.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -32,6 +31,12 @@ class AppMenuIconController :
     GLOBAL_ERROR,
     INCOMPATIBILITY_WARNING,
   };
+  enum class Severity {
+    NONE,
+    LOW,
+    MEDIUM,
+    HIGH,
+  };
 
   // Delegate interface for receiving icon update notifications.
   class Delegate {
@@ -40,7 +45,7 @@ class AppMenuIconController :
     // well as specifying whether it should |animate|. The |type| parameter
     // specifies the type of change (i.e. the source of the notification).
     virtual void UpdateSeverity(IconType type,
-                                AppMenuIconPainter::Severity severity,
+                                Severity severity,
                                 bool animate) = 0;
 
    protected: