Cleanup: Remove unneeded #includes for grit/, ui/base/l10n/l10n_util.h and ui/base/resource/resource_bundle.h.

For files that have #include from the list above, the heuristics for determining if the #includes are needed are as follows:

grit -> with a few exceptions, grep for ID[RS]
l10n_util.h -> grep l10n_util::
resource_bundle.h -> egrep
'(GetImageNamed|GetNativeImageNamed|GetRawDataResource|GetLocalizedString|GetImageSkiaNamed|ResourceBundle)'

Review URL: https://codereview.chromium.org/454583002

Cr-Commit-Position: refs/heads/master@{#288450}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288450 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/default_apps.cc b/chrome/browser/extensions/default_apps.cc
index fdae3ad0..2e81880 100644
--- a/chrome/browser/extensions/default_apps.cc
+++ b/chrome/browser/extensions/default_apps.cc
@@ -9,6 +9,7 @@
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
+#include "base/strings/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
@@ -17,7 +18,6 @@
 #include "chrome/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "extensions/common/extension.h"
-#include "ui/base/l10n/l10n_util.h"
 
 #if !defined(OS_ANDROID)
 #include "chrome/browser/first_run/first_run.h"