v3 UI has the capability to schedule an A/B testing in a specific range

v3 UI has the capability to schedule an A/B testing in a specific range
https://bugs.webkit.org/show_bug.cgi?id=154329

Reviewed by Chris Dumez.

Extended AnalysisTaskChartPane and ResultsTable so that users can select a range of points in either
the overview chart pane and the results viewer table. Extracted TestGroupForm out of the analysis task
page and used right below those two components in the analysis task page.

* public/v3/components/results-table.js:
(ResultsTable):
(ResultsTable.prototype.setRangeSelectorLabels): Added.
(ResultsTable.prototype.setRangeSelectorCallback): Added.
(ResultsTable.prototype.selectedRange): Added.
(ResultsTable.prototype._rangeSelectorClicked): Added.
(ResultsTable.prototype.render): Generate radio boxes to select a range.

* public/v3/components/test-group-form.js:
(TestGroupForm):
(TestGroupForm.prototype.setStartCallback): Added.
(TestGroupForm.prototype.setNeedsName): Added.
(TestGroupForm.prototype.setDisabled): Added.
(TestGroupForm.prototype.setLabel): Added.
(TestGroupForm.prototype.setRepetitionCount): Added.
(TestGroupForm.prototype._submitted): Added.
(TestGroupForm.htmlTemplate): Extracted from AnalysisTaskPage.htmlTemplate.

* public/v3/index.html:

* public/v3/pages/analysis-task-page.js:
(AnalysisTaskChartPane.prototype._mainSelectionDidChange): Added. Delegates the work to AnalysisTaskPage.
(AnalysisTaskChartPane.prototype.selectedPoints): Added.
(AnalysisTaskPage):
(AnalysisTaskPage.prototype.title):
(AnalysisTaskPage.prototype.render):
(AnalysisTaskPage.prototype._renderTestGroupDetails): Use TestGroupForm's methods instead of mutating DOM.
(AnalysisTaskPage.prototype._retryCurrentTestGroup):
(AnalysisTaskPage.prototype._chartSelectionDidChange): Added.
(AnalysisTaskPage.prototype._createNewTestGroupFromChart): Added.
(AnalysisTaskPage.prototype._selectedRowInAnalysisResultsViewer): Added.
(AnalysisTaskPage.prototype._createNewTestGroupFromViewer): Added.
(AnalysisTaskPage.prototype._createRetryNameForTestGroup):
(AnalysisTaskPage.prototype._createTestGroupAfterVerifyingRootSetList): Extracted from _retryCurrentTestGroup
so that we can call it in _createNewTestGroupFromChart and _createNewTestGroupFromViewer.
(AnalysisTaskPage.htmlTemplate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@196708 268f45cc-cd09-0410-ab3c-d52691b4dbfc