Added capability on Windows to get the physical dimensions of your attached monitors. Also added th…

ui/gfx/display.h

 // Copyright (c) 2012 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 UI_GFX_DISPLAY_H_
 #define UI_GFX_DISPLAY_H_
 
 #include <stdint.h>
 
 #include "base/compiler_specific.h"
@@ skipping 117 matching lines @@
 
   // Returns a string representation of the display;
   std::string ToString() const;
 
   // True if the display contains valid display id.
   bool is_valid() const { return id_ != kInvalidDisplayID; }
 
   // True if the display corresponds to internal panel.
   bool IsInternal() const;
 
+  // True if the physical size information is available.
+  bool IsPhysicalSizeAvailable() const;

[sky, 2016/01/13 21:00:10]

Is there a compelling reason to add api here? I don't see this api used in this
patch.

[Bret, 2016/01/14 01:28:23]

I talked with Scott and he's right, I'll revert this API change until someone
actually needs it.

+
+  // Gets/Sets the physical dimensions of the display in millimeters.
+  gfx::Size GetPhysicalSizeMm() const;
+  void SetPhysicalSizeMm(gfx::Size physical_size);
+
   // Gets/Sets an id of display corresponding to internal panel.
   static int64_t InternalDisplayId();
   static void SetInternalDisplayId(int64_t internal_display_id);
 
   // Test if the |id| is for the internal display if any.
   static bool IsInternalDisplayId(int64_t id);
 
   // True if there is an internal display.
   static bool HasInternalDisplay();
 
  private:
   int64_t id_;
   Rect bounds_;
   Rect work_area_;
   float device_scale_factor_;
   Rotation rotation_;
   TouchSupport touch_support_;
+  gfx::Size physical_size_mm_;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_DISPLAY_H_