views: Move widget/ directory to ui/views.

ui/views/widget/default_theme_provider.h

Index: ui/views/widget/default_theme_provider.h
diff --git a/views/widget/default_theme_provider.h b/ui/views/widget/default_theme_provider.h
similarity index 86%
rename from views/widget/default_theme_provider.h
rename to ui/views/widget/default_theme_provider.h
index 9303e832ebd201dccbd962641dfd13eaad112519..7119c598e721bc1f12d5cf99b2443447189766ee 100644
--- a/views/widget/default_theme_provider.h
+++ b/ui/views/widget/default_theme_provider.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef VIEWS_DEFAULT_THEME_PROVIDER_H_
-#define VIEWS_DEFAULT_THEME_PROVIDER_H_
+#ifndef UI_VIEWS_WIDGET_DEFAULT_THEME_PROVIDER_H_
+#define UI_VIEWS_WIDGET_DEFAULT_THEME_PROVIDER_H_
 #pragma once
 
 #include <vector>
@@ -41,4 +41,4 @@ class VIEWS_EXPORT DefaultThemeProvider : public ui::ThemeProvider {
 
 }  // namespace views
 
-#endif  // VIEWS_DEFAULT_THEME_PROVIDER_H_
+#endif  // UI_VIEWS_WIDGET_DEFAULT_THEME_PROVIDER_H_