Cleanup: Remove chrome namespace for storage monitor and media galleries.

chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc

Index: chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc
diff --git a/chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc b/chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc
index 74a35161fe6cb6403df5fc1c56b0ed0808ecd987..5414d0ea52cef65023cf0297ac0dfca4f809998e 100644
--- a/chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc
+++ b/chrome/browser/media_galleries/win/mtp_device_object_enumerator.cc
@@ -9,8 +9,6 @@
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_thread.h"
 
-namespace chrome {
-
 MTPDeviceObjectEnumerator::MTPDeviceObjectEnumerator(
     const MTPDeviceObjectEntries& entries)
     : object_entries_(entries),
@@ -70,5 +68,3 @@ bool MTPDeviceObjectEnumerator::HasMoreEntries() const {
 bool MTPDeviceObjectEnumerator::IsIndexReadyAndInRange() const {
   return is_index_ready_ && HasMoreEntries();
 }
-
-}  // namespace chrome