Create GrDraw and start fast pathing src over rects

include/gpu/GrDrawContext.h

Index: include/gpu/GrDrawContext.h
diff --git a/include/gpu/GrDrawContext.h b/include/gpu/GrDrawContext.h
index 97cb72a7f2e530166874b8998dd132b5a95653d1..96f6629ea6743aabf7852f52f804e810958438b6 100644
--- a/include/gpu/GrDrawContext.h
+++ b/include/gpu/GrDrawContext.h
@@ -12,8 +12,10 @@
 #include "SkRefCnt.h"
 #include "SkSurfaceProps.h"
 
+class GrBatch;
 class GrClip;
 class GrContext;
+class GrDraw;
 class GrDrawBatch;
 class GrDrawTarget;
 class GrPaint;
@@ -259,8 +261,14 @@ public:
      */
     void drawBatch(GrRenderTarget*, const GrClip&, const GrPaint&, GrDrawBatch*);
 
+    // This entry point is currently only used for text contexts and the experimental GrDraw
+    void drawBatch(const GrPipelineBuilder& pipelineBuilder, GrDrawBatch* batch);
+
+    // returns the last batch, or a null pointer if none is available.  This is so internal clients
+    // can fast path batching
+    GrBatch* lastBatch();
+
 private:
-    friend class GrAtlasTextContext; // for access to drawBatch
     friend class GrContext; // for ctor
 
     GrDrawContext(GrContext*, GrDrawTarget*, const SkSurfaceProps&);
@@ -278,10 +286,6 @@ private:
                           const SkPath&,
                           const GrStrokeInfo&);
 
-    // This entry point allows the GrTextContext-derived classes to add their batches to
-    // the drawTarget.
-    void drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch);
-
     GrContext*          fContext;     // owning context -> no ref
     GrDrawTarget*       fDrawTarget;
     GrTextContext*      fTextContext; // lazily created