Android: Add support for returning real screen resolution.

ui/gfx/android/shared_device_display_info.h

 // Copyright 2013 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_ANDROID_SHARED_DEVICE_DISPLAY_INFO_H_
 #define UI_GFX_ANDROID_SHARED_DEVICE_DISPLAY_INFO_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "base/synchronization/lock.h"
 
 namespace gfx {
 
 // Facilitates access to device information typically only
 // available using the Android SDK, including Display properties.
 class SharedDeviceDisplayInfo {
  public:
   static SharedDeviceDisplayInfo* GetInstance();
 
   int GetDisplayHeight();
   int GetDisplayWidth();
+  int GetPhysicalDisplayHeight();

[bulach, 2014/01/08 10:34:57]

nit: since this is the effective API via GetInstance(), maybe worth commenting
here (or adding in line 16, "see more in |DeviceDisplayInfo|") ?

+  int GetPhysicalDisplayWidth();
   int GetBitsPerPixel();
   int GetBitsPerComponent();
   double GetDIPScale();
   int GetSmallestDIPWidth();
 
   // Registers methods with JNI and returns true if succeeded.
   static bool RegisterSharedDeviceDisplayInfo(JNIEnv* env);
 
   void InvokeUpdate(JNIEnv* env,
                     jobject jobj,
                     jint display_height,
                     jint display_width,
+                    jint physical_display_height,
+                    jint physical_display_width,
                     jint bits_per_pixel,
                     jint bits_per_component,
                     jdouble dip_scale,
                     jint smallest_dip_width);
  private:
   friend struct DefaultSingletonTraits<SharedDeviceDisplayInfo>;
 
   SharedDeviceDisplayInfo();
   ~SharedDeviceDisplayInfo();
   void UpdateDisplayInfo(JNIEnv* env,
                          jobject jobj,
                          jint display_height,
                          jint display_width,
+                         jint physical_display_height,
+                         jint physical_display_width,
                          jint bits_per_pixel,
                          jint bits_per_component,
                          jdouble dip_scale,
                          jint smallest_dip_width);
 
   base::Lock lock_;
   base::android::ScopedJavaGlobalRef<jobject> j_device_info_;
 
   int display_height_;
   int display_width_;
+  int physical_display_height_;
+  int physical_display_width_;
   int bits_per_pixel_;
   int bits_per_component_;
   double dip_scale_;
   int smallest_dip_width_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedDeviceDisplayInfo);
 };
 
 }  // namespace gfx
 
 #endif // UI_GFX_ANDROID_SHARED_DEVICE_DISPLAY_INFO_H_