Initial GYP file for skia / gr. Builds SampleApp on Mac, Windows, Linux.

Review URL: http://codereview.appspot.com/4282056/

git-svn-id: http://skia.googlecode.com/svn/trunk@955 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/views/SkOSWindow_Unix.h b/include/views/SkOSWindow_Unix.h
index 1b008e1..e991828 100644
--- a/include/views/SkOSWindow_Unix.h
+++ b/include/views/SkOSWindow_Unix.h
@@ -39,7 +39,7 @@
     void* getDisplay() const { return (void*)fUnixWindow.fDisplay; }
     void* getUnixWindow() const { return (void*)&fUnixWindow; }
     void setUnixWindow(Display*, Window, size_t, GC);
-    bool attachGL(const SkBitmap* offscreen);
+    bool attachGL();
     void detachGL();
     void presentGL();