MacViews: Fix a forward declare of InputMethodDelegate in native_widget_private.h

It should be in namespace views::internal.

BUG=378134

Review URL: https://codereview.chromium.org/325163002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276548 0039d316-1c4b-4281-b951-d872f2087c98

ui/views/widget/native_widget_mac.h

@@ -40,7 +40,7 @@ class VIEWS_EXPORT NativeWidgetMac : public internal::NativeWidgetPrivate {
   virtual void ReleaseCapture() OVERRIDE;
   virtual bool HasCapture() const OVERRIDE;
   virtual InputMethod* CreateInputMethod() OVERRIDE;
-  virtual InputMethodDelegate* GetInputMethodDelegate() OVERRIDE;
+  virtual internal::InputMethodDelegate* GetInputMethodDelegate() OVERRIDE;
   virtual ui::InputMethod* GetHostInputMethod() OVERRIDE;
   virtual void CenterWindow(const gfx::Size& size) OVERRIDE;
   virtual void GetWindowPlacement(

ui/views/widget/native_widget_mac.mm

@@ -129,7 +129,7 @@ InputMethod* NativeWidgetMac::CreateInputMethod() {
   return NULL;
 }
 
-InputMethodDelegate* NativeWidgetMac::GetInputMethodDelegate() {
+internal::InputMethodDelegate* NativeWidgetMac::GetInputMethodDelegate() {
   NOTIMPLEMENTED();
   return NULL;
 }

ui/views/widget/native_widget_private.h

@@ -24,9 +24,9 @@ class OSExchangeData;
 
 namespace views {
 class InputMethod;
-class InputMethodDelegate;
 class TooltipManager;
 namespace internal {
+class InputMethodDelegate;
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeWidgetPrivate interface