Add NOOP "command" to picture format

https://codereview.appspot.com/7343044/



git-svn-id: http://skia.googlecode.com/svn/trunk@7752 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/debugger/SkDrawCommand.cpp b/debugger/SkDrawCommand.cpp
index b185595..89c338d 100644
--- a/debugger/SkDrawCommand.cpp
+++ b/debugger/SkDrawCommand.cpp
@@ -55,6 +55,7 @@
         case SET_MATRIX: return "Set Matrix";
         case SKEW: return "Skew";
         case TRANSLATE: return "Translate";
+        case NOOP: return "NoOp";
         default:
             SkDebugf("DrawType error 0x%08x\n", type);
             SkASSERT(0);