Add coverage tool

Add coverage tool

R=iposva@google.com

Committed: https://code.google.com/p/dart/source/detail?r=23368

[Ivan Posva, 2013-05-29 21:42:44]

LGTM -ip

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart
File tools/coverage.dart (right):

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode35
tools/coverage.dart:35: // Takes a JSON Debugger response and increments the
count for the source position
long liner

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode41
tools/coverage.dart:41: int tokenPos =
msg["params"]["location"]["tokenOffset"];;
What if the breakpoint message does not have a location? As far as I understand
the protocol the location is optional.

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode422
tools/coverage.dart:422: // Returns the character length of the newxt json
message in the
next

[hausner, 2013-05-29 21:55:34]

Thank you.

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart
File tools/coverage.dart (right):

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode35
tools/coverage.dart:35: // Takes a JSON Debugger response and increments the
count for the source position
On 2013/05/29 21:42:44, Ivan Posva wrote:
> long liner

Done.

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode41
tools/coverage.dart:41: int tokenPos =
msg["params"]["location"]["tokenOffset"];;
On 2013/05/29 21:42:44, Ivan Posva wrote:
> What if the breakpoint message does not have a location? As far as I
understand
> the protocol the location is optional.

True. Changed to ignore the breakpoint if it has no source location.

https://codereview.chromium.org/16203003/diff/1/tools/coverage.dart#newcode422
tools/coverage.dart:422: // Returns the character length of the newxt json
message in the
On 2013/05/29 21:42:44, Ivan Posva wrote:
> next
Downe

[hausner, 2013-05-29 21:57:36]

Committed patchset #2 manually as r23368 (presubmit successful).