Make DesktopResizer use ScreenResolution to facilitate DPI-awareness.

remoting/host/desktop_resizer.h

Index: remoting/host/desktop_resizer.h
diff --git a/remoting/host/desktop_resizer.h b/remoting/host/desktop_resizer.h
index 22439172c0abd5a13e4afe05a6568afdf56dc7de..945605a13aafd94845a55e837f5053d098d7dcd4 100644
--- a/remoting/host/desktop_resizer.h
+++ b/remoting/host/desktop_resizer.h
@@ -8,6 +8,7 @@
 #include <list>
 
 #include "base/memory/scoped_ptr.h"
+#include "remoting/host/screen_resolution.h"
 #include "third_party/skia/include/core/SkRect.h"
 
 namespace remoting {
@@ -19,30 +20,31 @@ class DesktopResizer {
   // Create a platform-specific DesktopResizer instance.
   static scoped_ptr<DesktopResizer> Create();
 
-  // Return the current size of the desktop.
-  virtual SkISize GetCurrentSize() = 0;
+  // Return the current resolution of the desktop.
+  virtual ScreenResolution GetCurrentResolution() = 0;
 
-  // Get the list of supported sizes, which should ideally include |preferred|.
-  // Implementations will generally do one of the following:
-  //   1. Return the list of sizes supported by the underlying video driver,
-  //      regardless of |preferred|.
+  // Get the list of supported resolutions, which should ideally include
+  // |preferred|. Implementations will generally do one of the following:
+  //   1. Return the list of resolutions supported by the underlying video
+  //      driver, regardless of |preferred|.
   //   2. Return a list containing just |preferred|, perhaps after imposing
   //      some minimum size constraint. This will typically be the case if
   //      there are no constraints imposed by the underlying video driver.
   //   3. Return an empty list if resize is not supported.
-  virtual std::list<SkISize> GetSupportedSizes(const SkISize& preferred) = 0;
-
-  // Set the size of the desktop. |size| must be one of the sizes previously
-  // returned by |GetSupportedSizes|. Note that implementations should fail
-  // gracefully if the specified size is no longer supported, since monitor
-  // configurations may change on the fly.
-  virtual void SetSize(const SkISize& size) = 0;
-
-  // Restore the original desktop size. The caller must provide the original
-  // size of the desktop, as returned by |GetCurrentSize|, as a hint. However,
-  // implementaions are free to ignore this. For example, virtual hosts will
-  // typically ignore it to avoid unnecessary resize operations.
-  virtual void RestoreSize(const SkISize& original) = 0;
+  virtual std::list<ScreenResolution> GetSupportedResolutions(
+      const ScreenResolution& preferred) = 0;
+
+  // Set the resolution of the desktop. |resolution| must be one of the
+  // resolutions previously returned by |GetSupportedResolutions|. Note that
+  // implementations should fail gracefully if the specified resolution is no
+  // longer supported, since monitor configurations may change on the fly.
+  virtual void SetResolution(const ScreenResolution& resolution) = 0;
+
+  // Restore the original desktop resolution. The caller must provide the
+  // original resolution of the desktop, as returned by |GetCurrentResolution|,
+  // as a hint. However, implementaions are free to ignore this. For example,
+  // virtual hosts will typically ignore it to avoid unnecessary resizes.
+  virtual void RestoreResolution(const ScreenResolution& original) = 0;
 };
 
 }  // namespace remoting