Small cleanup for ChromeBrowserMain:

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
===================================================================
--- chrome/chrome_browser.gypi	(revision 210624)
+++ chrome/chrome_browser.gypi	(working copy)
@@ -351,6 +351,8 @@
         'browser/chrome_browser_main_android.cc',
         'browser/chrome_browser_main_android.h',
         'browser/chrome_browser_main_extra_parts.h',
+        'browser/chrome_browser_main_extra_parts_x11.cc',
+        'browser/chrome_browser_main_extra_parts_x11.h',
         'browser/chrome_browser_main_linux.cc',
         'browser/chrome_browser_main_linux.h',
         'browser/chrome_browser_main_mac.h',
@@ -359,8 +361,6 @@
         'browser/chrome_browser_main_posix.h',
         'browser/chrome_browser_main_win.cc',
         'browser/chrome_browser_main_win.h',
-        'browser/chrome_browser_main_x11.cc',
-        'browser/chrome_browser_main_x11.h',
         'browser/chrome_content_browser_client.cc',
         'browser/chrome_content_browser_client.h',
         'browser/chrome_page_zoom.cc',
@@ -2255,7 +2255,6 @@
         'browser/thumbnails/thumbnailing_algorithm.h',
         'browser/thumbnails/thumbnailing_context.cc',
         'browser/thumbnails/thumbnailing_context.h',
-        'browser/toolkit_extra_parts.h',
         'browser/translate/options_menu_model.cc',
         'browser/translate/options_menu_model.h',
         'browser/translate/page_translated_details.h',