DevTools: Initial implementation of line-level CPU profile.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js
index 3a47aec5c1f3dda19bb816c34635b982732b2f1b..3b9493dae70b7f519d44dff2078fbb17fa6c9b4f 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineModel.js
@@ -729,8 +729,11 @@ WebInspector.TimelineModel.prototype = {
             var cpuProfileEvent = events.peekLast();
             if (cpuProfileEvent && cpuProfileEvent.name === WebInspector.TimelineModel.RecordType.CpuProfile) {
                 var cpuProfile = cpuProfileEvent.args["data"]["cpuProfile"];
-                if (cpuProfile)
-                    jsSamples = WebInspector.TimelineJSProfileProcessor.generateTracingEventsFromCpuProfile(cpuProfile, thread);
+                if (cpuProfile) {
+                    var jsProfileModel = new WebInspector.CPUProfileDataModel(cpuProfile);

[caseq, 2016/03/11 22:52:05]

Can we take it out of model?

[alph, 2016/03/12 00:47:54]

Done.

+                    WebInspector.TimelineJSProfileProcessor.buildLineLevelProfiles(jsProfileModel);
+                    jsSamples = WebInspector.TimelineJSProfileProcessor.generateTracingEventsFromCpuProfile(jsProfileModel, thread);
+                }
             }
         }