Integrate the new input method API for Views into Chromium.

views/widget/widget.h

Index: views/widget/widget.h
diff --git a/views/widget/widget.h b/views/widget/widget.h
index 171ebbbab61f7178c0b2ef327f0cc37489ba2669..3813dc7090d0b1336799f2da95fd7ff1e09cb1c5 100644
--- a/views/widget/widget.h
+++ b/views/widget/widget.h
@@ -33,6 +33,7 @@ using ui::ThemeProvider;
 namespace views {
 
 class DefaultThemeProvider;
+class InputMethod;
 class NativeWidget;
 class RootView;
 class TooltipManager;
@@ -219,6 +220,10 @@ class Widget : public internal::NativeWidgetDelegate,
   // TODO(beng): remove virtual.
   virtual FocusManager* GetFocusManager();
 
+  // Returns the InputMethod for this widget.
+  // Note that all widgets in a widget hierarchy share the same input method.
+  InputMethod* GetInputMethod() const;
+
   // Returns true if the native view |native_view| is contained in the
   // views::View hierarchy rooted at this widget.
   // TODO(beng): const.