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

include/views/SkWindow.h

Index: include/views/SkWindow.h
diff --git a/include/views/SkWindow.h b/include/views/SkWindow.h
index b4fabd253ee15a9fdfd739587d03561a59e9775b..341046aacccfd3b5443511ca620dd3f52a3cbb76 100644
--- a/include/views/SkWindow.h
+++ b/include/views/SkWindow.h
@@ -32,8 +32,14 @@ public:
     virtual ~SkWindow();
 
     struct AttachmentInfo {
+        AttachmentInfo()
+            : fSampleCount(0)
+            , fStencilBits(0)
+            , fColorBits(0) {}
+
         int fSampleCount;
         int fStencilBits;
+        int fColorBits;
     };
 
     SkSurfaceProps getSurfaceProps() const { return fSurfaceProps; }