Increase the amount of debug information printed out by batches

include/gpu/GrProcessor.h

Index: include/gpu/GrProcessor.h
diff --git a/include/gpu/GrProcessor.h b/include/gpu/GrProcessor.h
index 7c24f549f0caf6ecf0109774c28b84fc232b8db5..9b5db5e033912e36be0070babb40468b23563a89 100644
--- a/include/gpu/GrProcessor.h
+++ b/include/gpu/GrProcessor.h
@@ -13,6 +13,7 @@
 #include "GrProgramElement.h"
 #include "GrTextureAccess.h"
 #include "SkMath.h"
+#include "SkString.h"
 
 class GrContext;
 class GrCoordTransform;
@@ -62,6 +63,13 @@ public:
         in generated shader code. */
     virtual const char* name() const = 0;
 
+    // Human-readable dump of all information 
+    virtual SkString dumpInfo() const {
+        SkString str;
+        str.appendf("Missing data");
+        return str;
+    }
+
     int numTextures() const { return fTextureAccesses.count(); }
 
     /** Returns the access pattern for the texture at index. index must be valid according to