Use trace_child_process.py on Windows and save information about the trace in json.

Use trace_child_process.py on Windows and save information about the trace in json.

Removes much of the guesswork in the log parsing code, now the child process id
is known.
Remove references to logman.exe in the log parsing script since it's now called
by the grand-parent process.

NOTRY=true
R=cmp@chromium.org
BUG=98636
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=140421

[cmp, 2012-06-04 22:15:34]

lgtm with nits

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_ch...
File tools/isolate/trace_child_process.py (right):

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_ch...
tools/isolate/trace_child_process.py:6: """Waits for the go signal and replaces
itself with the command to be run.
This should be updated now that on windows it doesn't wait for the go signal
(that's only in the --wait case).

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_in...
File tools/isolate/trace_inputs.py (right):

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_in...
tools/isolate/trace_inputs.py:1493: the Windows Kernel doesn't have a concept of
current working directory.
of a single current working directory per process

[M-A Ruel, 2012-06-04 23:18:06]

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_ch...
File tools/isolate/trace_child_process.py (right):

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_ch...
tools/isolate/trace_child_process.py:6: """Waits for the go signal and replaces
itself with the command to be run.
On 2012/06/04 22:15:34, cmp wrote:
> This should be updated now that on windows it doesn't wait for the go signal
> (that's only in the --wait case).

Thanks, also added comment about 'why' it is used.

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_in...
File tools/isolate/trace_inputs.py (right):

https://chromiumcodereview.appspot.com/10448044/diff/1/tools/isolate/trace_in...
tools/isolate/trace_inputs.py:1493: the Windows Kernel doesn't have a concept of
current working directory.
On 2012/06/04 22:15:34, cmp wrote:
> of a single current working directory per process

There's no current directory concept at all. I changed the wording to be more
explicit.

[commit-bot: I haz the power, 2012-06-04 23:18:36]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/10448044/5001

[commit-bot: I haz the power, 2012-06-04 23:19:55]

Change committed as 140421