Web Inspector: hook up probe samples to TimelineAgent's records

Web Inspector: hook up probe samples to TimelineAgent's records
https://bugs.webkit.org/show_bug.cgi?id=131127

Reviewed by Timothy Hatcher.

Source/JavaScriptCore:

* inspector/ScriptDebugListener.h: Add a proper forward declaration for ScriptBreakpointAction.

Source/WebCore:

Hook up probe callbacks from ScriptDebugListener so that timeline records are
created for probe samples. The record includes the probe identifier and hit count.
The actual probe evaluation result is sent separately by DebuggerAgent, and
can be looked up in frontend models using the identifier and hit count.

* inspector/InspectorTimelineAgent.cpp: Only listen to the debug server when recording.
(WebCore::InspectorTimelineAgent::start):
(WebCore::InspectorTimelineAgent::stop):
(WebCore::InspectorTimelineAgent::breakpointActionProbe):
(WebCore::toProtocol):
* inspector/InspectorTimelineAgent.h:
* inspector/TimelineRecordFactory.cpp:
(WebCore::TimelineRecordFactory::createProbeSampleData):
* inspector/TimelineRecordFactory.h:
* inspector/protocol/Timeline.json: Add new enum value.

Source/WebInspectorUI:

* UserInterface/Controllers/TimelineManager.js: Stub out a case for the ProbeSample record type.
(WebInspector.TimelineManager.prototype.eventRecorded.processRecord):
(WebInspector.TimelineManager.prototype.eventRecorded):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@166827 268f45cc-cd09-0410-ab3c-d52691b4dbfc