Move EndsWith to base namespace.

components/storage_monitor/volume_mount_watcher_win.cc

Index: components/storage_monitor/volume_mount_watcher_win.cc
diff --git a/components/storage_monitor/volume_mount_watcher_win.cc b/components/storage_monitor/volume_mount_watcher_win.cc
index bdc7634c39c8925ebaba6966ba30aa7a320c7a7f..0828db5c6172a80cd17a9bc4ed3b50344a0074fa 100644
--- a/components/storage_monitor/volume_mount_watcher_win.cc
+++ b/components/storage_monitor/volume_mount_watcher_win.cc
@@ -70,7 +70,7 @@ DeviceType GetDeviceType(const base::string16& mount_point) {
   // Check device strings of the form "X:" and "\\.\X:"
   // For floppy drives, these will return strings like "/Device/Floppy0"
   base::string16 device = mount_point;
-  if (EndsWith(mount_point, L"\\", false))
+  if (base::EndsWith(mount_point, L"\\", false))
     device = mount_point.substr(0, mount_point.length() - 1);
   base::string16 device_path;
   base::string16 device_path_slash;