[Remoting Client] Always ResizeToFit when desktop/surface size is changed

remoting/client/desktop_viewport.h

 // Copyright 2017 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 REMOTING_CLIENT_DESKTOP_VIEWPORT_H_
 #define REMOTING_CLIENT_DESKTOP_VIEWPORT_H_
 
 #include "base/callback.h"
 #include "remoting/client/view_matrix.h"
 
@@ skipping 77 matching lines @@
   // Translates the viewport on the desktop's reference frame by <dx, dy>,
   // without calling UpdateViewport().
   void MoveViewportCenterWithoutUpdate(float dx, float dy);
 
   // Moves the point inside the bounds with minimum displacement if it is out of
   // the bounds.
   static ViewMatrix::Point ConstrainPointToBounds(
       const Bounds& bounds,
       const ViewMatrix::Point& point);
 
-  ViewMatrix::Vector2D desktop_size_;
-  ViewMatrix::Vector2D surface_size_;
-
-  bool desktop_size_ready_ = false;
-  bool surface_size_ready_ = false;
+  ViewMatrix::Vector2D desktop_size_{0.f, 0.f};
+  ViewMatrix::Vector2D surface_size_{0.f, 0.f};
 
   ViewMatrix desktop_to_surface_transform_;
 
   TransformationCallback on_transformation_changed_;
 
   // DesktopViewport is neither copyable nor movable.
   DesktopViewport(const DesktopViewport&) = delete;
   DesktopViewport& operator=(const DesktopViewport&) = delete;
 };
 
 }  // namespace remoting
 #endif  // REMOTING_CLIENT_DESKTOP_VIEWPORT_H_