Add scripts to list or trace all test cases in a gtest executable.

Add scripts to list or trace all test cases in a gtest executable.

list_test_cases.py quickly outputs the test cases in a gtest executable. For browser_tests is takes ~100ms.

trace_test_cases.py traces each test individually to be able to generate pretty graphs.

read_trace.py is a debugging tool to read a single trace.

Refactor trace_inputs.py to make it possible. I changed the semantic for it so that stdin is closed and stderr is redirected to stdout. I also have the logger not look at the logging level to determine if output should be shown.

R=rogerta@chromium.org
BUG=98636
TEST=

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=136601

[Roger Tawa OOO till Jul 10th, 2012-05-11 14:17:07]

lgtm, some doc nits below.

http://codereview.chromium.org/10377105/diff/2001/tools/isolate/read_trace.py
File tools/isolate/read_trace.py (right):

http://codereview.chromium.org/10377105/diff/2001/tools/isolate/read_trace.py...
tools/isolate/read_trace.py:33: '-v', '--verbose', action='count', default=0,
help='Use multiple times')
i guess you can use it 0, 1, or 2 times.  anything else is not helpful.  maybe
better help string?

http://codereview.chromium.org/10377105/diff/2001/tools/isolate/trace_inputs.py
File tools/isolate/trace_inputs.py (right):

http://codereview.chromium.org/10377105/diff/2001/tools/isolate/trace_inputs....
tools/isolate/trace_inputs.py:1334: def load_trace(logfile, root_dir, api):
Please add docs for this function, and arg docs for the new functions above too.

[commit-bot: I haz the power, 2012-05-11 15:54:57]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/10377105/1007

[commit-bot: I haz the power, 2012-05-11 17:25:05]

Change committed as 136601