[Reland] Introduce telemetry.web_components and a simple component-based Results object

[Reland] Introduce telemetry.web_components and a simple component-based Results object

The main result of this patch is that
cd $TELEMETRY && python -m telemetry.web_components.results_viewer

will produce an HTML file that has the same standalone-and-emailable properties as telemetry's existing HTML results object, but that is built out of tvcm components, trace-viewer's component model. Followup patches will expand out results_viewer.js with features to actually be a viable replacement for Telemetry's existing results.html.

Importantly, with this checkin, telemetry's existing ./run_tests will also run any javascript unittests and the presubmit will lint the same js and css files.

BUG=340096
TBR=tonyg,achuith

Original review at: https://codereview.chromium.org/169283004/

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=253658

[nduca, 2014-02-27 00:22:21]

ptal

[achuithb, 2014-02-27 00:23:14]

On 2014/02/27 00:22:21, nduca wrote:
> ptal

lgtm, thanks!

[nduca, 2014-02-27 00:26:54]

Committed patchset #1 manually as r253658 (presubmit successful).

[achuithb, 2014-02-27 22:07:28]

On 2014/02/27 00:26:54, nduca wrote:
> Committed patchset #1 manually as r253658 (presubmit successful).

Fyi, this always runs a tvcm unittest even when you provide a filter.

For instance, with:
run_tests testBrowserCreation
some tvcm test will first run (web_components_unittest.py's load_tests is
called).

[achuithb, 2014-02-27 22:18:31]

On 2014/02/27 22:07:28, achuith.bhandarkar wrote:
> On 2014/02/27 00:26:54, nduca wrote:
> > Committed patchset #1 manually as r253658 (presubmit successful).
> 
> Fyi, this always runs a tvcm unittest even when you provide a filter.
> 
> For instance, with:
> run_tests testBrowserCreation
> some tvcm test will first run (web_components_unittest.py's load_tests is
> called).

_DiscoverTestsInModuleImpl actually creates a browser instance and navigates to
it:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/trace-...