Make all GrContext draws go through the draw buffer.

Review URL: http://codereview.appspot.com/6462069/


git-svn-id: http://skia.googlecode.com/svn/trunk@5136 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrConfig.h b/include/gpu/GrConfig.h
index eecce79..ffab237 100644
--- a/include/gpu/GrConfig.h
+++ b/include/gpu/GrConfig.h
@@ -337,6 +337,14 @@
 #endif
 
 /**
+ *  GR_DISABLE_DRAW_BUFFERING prevents GrContext from queueing draws in a
+ *  GrInOrderDrawBuffer.
+ */
+#if !defined(GR_DISABLE_DRAW_BUFFERING)
+    #define GR_DISABLE_DRAW_BUFFERING 0
+#endif
+
+/**
  *  GR_AGGRESSIVE_SHADER_OPTS controls how aggressively shaders are optimized
  *  for special cases. On systems where program changes are expensive this
  *  may not be advantageous. Consecutive draws may no longer use the same