Debugger improvements

This CL:
  improves the 'SaveAs' functionality
  allows switching between # and offset indexing in the command list
  minor nit cleanup

R=bsalomon@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/211383003

git-svn-id: http://skia.googlecode.com/svn/trunk@13950 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/debugger/SkDebugger.h b/debugger/SkDebugger.h
index 20c4a78..94300d8 100644
--- a/debugger/SkDebugger.h
+++ b/debugger/SkDebugger.h
@@ -48,6 +48,10 @@
         return fDebugCanvas->getDrawCommandsAsStrings();
     }
 
+    SkTDArray<size_t>* getDrawCommandOffsets() {
+        return fDebugCanvas->getDrawCommandOffsets();
+    }
+
     const SkTDArray<SkDrawCommand*>& getDrawCommands() const {
         return fDebugCanvas->getDrawCommands();
     }