Move apps::SizeConstraints to extensions

extensions/browser/app_window/size_constraints.h

 // Copyright 2014 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.
 
-#ifndef APPS_SIZE_CONSTRAINTS_H_
-#define APPS_SIZE_CONSTRAINTS_H_
+#ifndef EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_
+#define EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_
 
 #include "ui/gfx/geometry/size.h"
 
 namespace gfx {
 class Insets;
 }
 
-namespace apps {
+namespace extensions {
 
 class SizeConstraints {
  public:
   // The value SizeConstraints uses to represent an unbounded width or height.
   // This is an enum so that it can be declared inline here.
   enum { kUnboundedSize = 0 };
 
   SizeConstraints();
   SizeConstraints(const gfx::Size& min_size, const gfx::Size& max_size);
   ~SizeConstraints();
@@ skipping 20 matching lines @@
   gfx::Size GetMinimumSize() const;
 
   void set_minimum_size(const gfx::Size& min_size);
   void set_maximum_size(const gfx::Size& max_size);
 
  private:
   gfx::Size minimum_size_;
   gfx::Size maximum_size_;
 };
 
-}  // namespace apps
+}  // namespace extensions
 
-#endif  // APPS_SIZE_CONSTRAINTS_H_
+#endif  // EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_