Make delegated software renderer work on Mac

content/browser/compositor/software_output_device_ozone.h

 // Copyright 2014 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 CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_OZONE_H_
 #define CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_OZONE_H_
 
 #include "cc/output/software_output_device.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 10 matching lines @@
 
 // Ozone implementation which relies on software rendering. Ozone will present
 // an accelerated widget as a SkCanvas. SoftwareOutputDevice will then use the
 // Ozone provided canvas to draw.
 class CONTENT_EXPORT SoftwareOutputDeviceOzone
     : public cc::SoftwareOutputDevice {
  public:
   explicit SoftwareOutputDeviceOzone(ui::Compositor* compositor);
   virtual ~SoftwareOutputDeviceOzone();
 
-  virtual void Resize(const gfx::Size& viewport_size) OVERRIDE;
+  virtual void Resize(const gfx::Size& viewport_pixel_size,
+                      float scale_factor) OVERRIDE;
   virtual SkCanvas* BeginPaint(const gfx::Rect& damage_rect) OVERRIDE;
   virtual void EndPaint(cc::SoftwareFrameData* frame_data) OVERRIDE;
 
  private:
   ui::Compositor* compositor_;
 
   scoped_ptr<gfx::SurfaceOzoneCanvas> surface_ozone_;
 
   DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDeviceOzone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_OZONE_H_