Make profile tree more useful

[GoogleCodeExporter]

Paul DeBruicke

In the attached file-out I included a version of WAProfilerItem>>#tree that 
prints % and times:

 8.3% {22ms} JQAjax>>script:
  |8.3% {22ms} JQAjax(JSObject)>>script:on:
  |  8.3% {22ms} JSScript(JSObject)>>javascriptOn:
  |    8.3% {22ms} JSScript>>javascriptContentOn:
  |      8.3% {22ms} GRNullCodecStream(GRCodecStream)>>javascript:
  |        8.3% {22ms} JQueryInstance(JSObject)>>javascriptOn:
  |          8.3% {22ms} JSCall>>javascriptContentOn:
  |            8.3% {22ms} JSStream class>>encodeArguments:on:
  |              8.3% {22ms} GRNullCodecStream(GRCodecStream)>>javascript:
  |                8.3% {22ms} ByteString(String)>>javascriptOn:
  |                  8.3% {22ms} JSStream class>>encodeString:on:
  |                    3.8% {10ms} primitives
  |                    2.3% {6ms} Character>>greaseInteger
  |                    1.5% {4ms} GRNullCodecStream>>nextPut:


 rather than:

 0 JQAjax>>script:
  |0 JQAjax(JSObject)>>script:on:
  |  |0 JSScript(JSObject)>>javascriptOn:
  |  |  0 JSScript>>javascriptContentOn:
  |  |    0 GRNullCodecStream(GRCodecStream)>>javascript:
  |  |      0 JQueryInstance(JSObject)>>javascriptOn:
  |  |        0 JSCall>>javascriptContentOn:
  |  |          0 JSStream class>>encodeArguments:on:
  |  |            0 GRNullCodecStream(GRCodecStream)>>javascript:
  |  |              0 ByteString(String)>>javascriptOn:
  |  |                4 JSStream class>>encodeString:on:
  |  |                  2 GRNullCodecStream>>nextPut:
  |  |                  2 Character>>=

Original issue reported on code.google.com by philippe...@gmail.com on 29 Mar 2012 at 6:16