Get IME's to work in Chrome OS mode on Windows 7.

ui/base/ime/remote_input_method_win.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/base/ime/remote_input_method_win.h"
 
+#include "base/command_line.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"
 #include "ui/base/ime/input_method_observer.h"
 #include "ui/base/ime/remote_input_method_delegate_win.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/base/ime/win/tsf_input_scope.h"
+#include "ui/base/ui_base_switches.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/rect.h"
 
 namespace ui {
 namespace {
 
 const LANGID kFallbackLangID =
     MAKELANGID(LANG_NEUTRAL, SUBLANG_UI_CUSTOM_DEFAULT);
 
@@ skipping 330 matching lines @@
   bool is_candidate_popup_open_;
   bool is_ime_;
   LANGID langid_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteInputMethodWin);
 };
 
 }  // namespace
 
 bool IsRemoteInputMethodWinRequired(gfx::AcceleratedWidget widget) {
+  // If the remote input method is already registered then don't do it again.
+  if (ui::g_public_interface_ && ui::g_private_interface_)
+    return false;
+
   DWORD process_id = 0;
   if (GetWindowThreadProcessId(widget, &process_id) == 0)
     return false;
   base::win::ScopedHandle process_handle(::OpenProcess(
       PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id));
   if (!process_handle.IsValid())
     return false;
-  return base::win::IsProcessImmersive(process_handle.Get());
+  return base::win::IsProcessImmersive(process_handle.Get()) ||
+         CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kViewerConnect);
 }
 
 RemoteInputMethodPrivateWin::RemoteInputMethodPrivateWin() {}
 
 scoped_ptr<InputMethod> CreateRemoteInputMethodWin(
     internal::InputMethodDelegate* delegate) {
   return scoped_ptr<InputMethod>(new RemoteInputMethodWin(delegate));
 }
 
 // static
 RemoteInputMethodPrivateWin* RemoteInputMethodPrivateWin::Get(
     InputMethod* input_method) {
   return GetPrivate(input_method);
 }
 
 }  // namespace ui