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

chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h

Index: chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h
diff --git a/chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h b/chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h
index 53fe93b43558eeef465774751885642e06df64cd..1f51be8a4b67e9d9f90e4ba4e4484d3aed509912 100644
--- a/chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h
+++ b/chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h
@@ -14,8 +14,6 @@ namespace base {
 class FilePath;
 }
 
-namespace chrome {
-
 // Asynchronous delegate for media transfer protocol (MTP) device to perform
 // media device isolated file system operations. Class that implements this
 // delegate does the actual communication with the MTP device.
@@ -80,6 +78,4 @@ class MTPDeviceAsyncDelegate {
   virtual ~MTPDeviceAsyncDelegate() {}
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_ASYNC_DELEGATE_H_