WIP: Ash IME support

ui/base/ime/input_method_factory.cc

Index: ui/base/ime/input_method_factory.cc
diff --git a/ui/base/ime/input_method_factory.cc b/ui/base/ime/input_method_factory.cc
index 6b0bd72b4d3a861228e7a69198c8f7ecd21a4333..3bf240683bfaf43ded8ef7e953cf498b96133106 100644
--- a/ui/base/ime/input_method_factory.cc
+++ b/ui/base/ime/input_method_factory.cc
@@ -13,6 +13,7 @@
 #include "base/win/metro.h"
 #include "ui/base/ime/input_method_imm32.h"
 #include "ui/base/ime/input_method_tsf.h"
+#include "ui/base/ime/remote_input_method_win.h"
 #elif defined(USE_AURA) && defined(USE_X11)
 #include "ui/base/ime/input_method_linux_x11.h"
 #else
@@ -26,11 +27,27 @@ bool g_input_method_set_for_testing = false;
 InputMethod* g_shared_input_method = NULL;
 
 #if defined(OS_WIN)
+bool IsWindowImmersive(HWND window_handle) {
+  DWORD process_id = 0;
+  if (::GetWindowThreadProcessId(window_handle, &process_id) == 0)
+    return false;
+  // TODO(yukawa): Use ScopedHandle.
+  HANDLE process_handle = ::OpenProcess(
+      PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
+  if (process_handle == NULL)
+    return false;
+  const bool result = base::win::IsProcessImmersive(process_handle);
+  ::CloseHandle(process_handle);
+  return result;
+}
+
 // Returns a new instance of input method object for IMM32 or TSF.
 scoped_ptr<InputMethod> CreateInputMethodWinInternal(
     internal::InputMethodDelegate* delegate,
     gfx::AcceleratedWidget widget) {
-  if (base::win::IsTSFAwareRequired())
+  if (IsWindowImmersive(widget))
+    return CreateRemoteInputMethodWin(delegate);
+  else if(base::win::IsTSFAwareRequired())
     return scoped_ptr<InputMethod>(new InputMethodTSF(delegate, widget));
   else
     return scoped_ptr<InputMethod>(new InputMethodIMM32(delegate, widget));