Fixes for PNaCl build of remoting client plugin in chromium.

webrtc/modules/desktop_capture/desktop_frame.h

Index: webrtc/modules/desktop_capture/desktop_frame.h
diff --git a/webrtc/modules/desktop_capture/desktop_frame.h b/webrtc/modules/desktop_capture/desktop_frame.h
index 29d5076959583ff11ff25ad520ad9ff3c59be738..d7376b481a2674de8d64bf3f72c276de370718aa 100644
--- a/webrtc/modules/desktop_capture/desktop_frame.h
+++ b/webrtc/modules/desktop_capture/desktop_frame.h
@@ -98,7 +98,7 @@ class DesktopFrame {
 class BasicDesktopFrame : public DesktopFrame {
  public:
   explicit BasicDesktopFrame(DesktopSize size);
-  virtual ~BasicDesktopFrame();
+  ~BasicDesktopFrame() override;
 
   // Creates a BasicDesktopFrame that contains copy of |frame|.
   static DesktopFrame* CopyOf(const DesktopFrame& frame);
@@ -114,7 +114,7 @@ class SharedMemoryDesktopFrame : public DesktopFrame {
   SharedMemoryDesktopFrame(DesktopSize size,
                            int stride,
                            SharedMemory* shared_memory);
-  virtual ~SharedMemoryDesktopFrame();
+  ~SharedMemoryDesktopFrame() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SharedMemoryDesktopFrame);