Update Panel UI looks on Windows.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
===================================================================
--- chrome/chrome_browser.gypi	(revision 87324)
+++ chrome/chrome_browser.gypi	(working copy)
@@ -2866,8 +2866,6 @@
         'browser/ui/omnibox/omnibox_view.h',
         'browser/ui/options/options_util.cc',
         'browser/ui/options/options_util.h',
-        'browser/ui/panels/about_panel_bubble.cc',
-        'browser/ui/panels/about_panel_bubble.h',
         'browser/ui/panels/panel.cc',
         'browser/ui/panels/panel.h',
         'browser/ui/panels/panel_browser_frame_view.cc',
@@ -3752,8 +3750,6 @@
             'browser/power_save_blocker_stub.cc',
             'browser/ui/browser_list_stub.cc',
             'browser/ui/crypto_module_password_dialog_nss.cc',
-            'browser/ui/panels/about_panel_bubble.cc',
-            'browser/ui/panels/about_panel_bubble.h',
             'browser/ui/panels/panel_browser_frame_view.cc',
             'browser/ui/panels/panel_browser_frame_view.h',
             'browser/ui/panels/panel_browser_view.cc',
@@ -4334,8 +4330,6 @@
                 ['include', '^browser/printing/print_dialog_gtk.h'],
                 ['exclude', '^browser/bookmarks/bookmark_drop_info.cc'],
                 ['exclude', '^browser/ui/browser_list_stub.cc'],
-                ['exclude', '^browser/ui/panels/about_panel_bubble.cc'],
-                ['exclude', '^browser/ui/panels/about_panel_bubble.h'],
                 ['exclude', '^browser/ui/panels/panel_browser_frame_view.cc'],
                 ['exclude', '^browser/ui/panels/panel_browser_frame_view.h'],
                 ['exclude', '^browser/ui/panels/panel_browser_view.cc'],