Make DesktopResizer use ScreenResolution to facilitate DPI-awareness.

remoting/host/screen_resolution.cc

Index: remoting/host/screen_resolution.cc
diff --git a/remoting/host/screen_resolution.cc b/remoting/host/screen_resolution.cc
index b792cefc582be87d2f83c017bfbf00843bb1e9af..ff3c4777112f445f74d8cc9f69491012e2641f32 100644
--- a/remoting/host/screen_resolution.cc
+++ b/remoting/host/screen_resolution.cc
@@ -43,4 +43,8 @@ bool ScreenResolution::IsEmpty() const {
   return dimensions_.is_empty() || dpi_.is_zero();
 }
 
+bool ScreenResolution::Equals(const ScreenResolution& other) const {
+  return dimensions_.equals(other.dimensions()) && dpi_.equals(other.dpi());
+}
+
 }  // namespace remoting