Remove base/win/metro.{cc|h} and some associated code

ui/base/ime/remote_input_method_win.cc

Index: ui/base/ime/remote_input_method_win.cc
diff --git a/ui/base/ime/remote_input_method_win.cc b/ui/base/ime/remote_input_method_win.cc
index 53f26128c09d4d2270f2b19f0493d4eee1253c19..27d242a384b3d7d9a5e9f087366d690903784e84 100644
--- a/ui/base/ime/remote_input_method_win.cc
+++ b/ui/base/ime/remote_input_method_win.cc
@@ -11,7 +11,6 @@
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/strings/utf_string_conversions.h"
-#include "base/win/metro.h"
 #include "base/win/scoped_handle.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/input_method_delegate.h"
@@ -366,9 +365,8 @@ bool IsRemoteInputMethodWinRequired(gfx::AcceleratedWidget widget) {
       PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id));
   if (!process_handle.IsValid())
     return false;
-  return base::win::IsProcessImmersive(process_handle.Get()) ||
-         base::CommandLine::ForCurrentProcess()->HasSwitch(
-             switches::kViewerConnect);
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kViewerConnect);
 }
 
 RemoteInputMethodPrivateWin::RemoteInputMethodPrivateWin() {}