Added --deepColor option to SampleApp, triggers creation of a ten-bit/channel buffer on Windows.

samplecode/SampleApp.h

Index: samplecode/SampleApp.h
diff --git a/samplecode/SampleApp.h b/samplecode/SampleApp.h
index c56bcd44888df570f652b873d36584b3bdf5c2b4..11b6e619d5cad31bfc82d732fe0b63bdab032d06 100644
--- a/samplecode/SampleApp.h
+++ b/samplecode/SampleApp.h
@@ -74,7 +74,7 @@ public:
     public:
 
 
-        virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) = 0;
+        virtual void setUpBackend(SampleWindow* win, int msaaSampleCount, bool tenBitColor) = 0;
 
         virtual void tearDownBackend(SampleWindow* win) = 0;
 
@@ -212,6 +212,7 @@ private:
     unsigned   fFlipAxis;
 
     int fMSAASampleCount;
+    bool fTenBitColor;
 
     SkScalar fZoomCenterX, fZoomCenterY;