[Telemetry] Add interaction_record field to Value

[Telemetry] Add interaction_record field to Value

This change adds a field called interaction_record to values, which will
specify the label of the interaction_record with which the value is associated,
if it was generated by TimelineBasedMeasurement.

R=nednguyen,dtu
BUG=461101
Committed: https://crrev.com/579346a58192cd767faae7ee20857fb7c6b24496
Cr-Commit-Position: refs/heads/master@{#319155}

[eakuefner, 2015-02-27 23:50:58]

I plan to remove the wrapper class that's currently in TBM in a following
change.

[nednguyen, 2015-02-28 01:02:24]

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
File tools/telemetry/telemetry/value/__init__.py (right):

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
tools/telemetry/telemetry/value/__init__.py:61: this value is associated.
s/The label/The string label.

[nednguyen, 2015-02-28 01:29:34]

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
File tools/telemetry/telemetry/value/__init__.py (right):

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
tools/telemetry/telemetry/value/__init__.py:90: def
MergeLikeValuesFromSamePage(cls, values):
How does interaction record fit into these merge methods?

[eakuefner, 2015-03-02 23:46:57]

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
File tools/telemetry/telemetry/value/__init__.py (right):

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
tools/telemetry/telemetry/value/__init__.py:61: this value is associated.
On 2015/02/28 01:02:24, nednguyen wrote:
> s/The label/The string label.

Done.

https://codereview.chromium.org/963313002/diff/1/tools/telemetry/telemetry/va...
tools/telemetry/telemetry/value/__init__.py:90: def
MergeLikeValuesFromSamePage(cls, values):
On 2015/02/28 01:29:34, nednguyen wrote:
> How does interaction record fit into these merge methods?

Done. Since our current merge policy says that values that don't have the same
name can't be merged and the interaction record is still part of name I've
conservatively assumed that values should have the same IR in order to be
merged. I've updated the value types that are subject to merging accordingly,
and added merging and compatibility unit tests.

[nednguyen, 2015-03-04 21:01:45]

lgtm
We still need to do some work on value/summary.py but this patch is a good start
to move forward.

[eakuefner, 2015-03-04 21:05:58]

The CQ bit was checked by eakuefner@chromium.org

[commit-bot: I haz the power, 2015-03-04 21:06:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/963313002/40001

[commit-bot: I haz the power, 2015-03-04 23:10:02]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-03-04 23:11:01]

Patchset 3 (id:??) landed as
https://crrev.com/579346a58192cd767faae7ee20857fb7c6b24496
Cr-Commit-Position: refs/heads/master@{#319155}