DevTools: Make StepInto work across script boundaries and Blink process tasks.

Source/core/inspector/InspectorInstrumentation.cpp

Index: Source/core/inspector/InspectorInstrumentation.cpp
diff --git a/Source/core/inspector/InspectorInstrumentation.cpp b/Source/core/inspector/InspectorInstrumentation.cpp
index 81164924bb1d61bf03567e215b44794f9bcc584e..f15f00802e5697059a754ebe3c7146015a022455 100644
--- a/Source/core/inspector/InspectorInstrumentation.cpp
+++ b/Source/core/inspector/InspectorInstrumentation.cpp
@@ -169,12 +169,6 @@ bool consoleAgentEnabled(ExecutionContext* executionContext)
     return consoleAgent && consoleAgent->enabled();
 }
 
-bool timelineAgentEnabled(ExecutionContext* executionContext)
-{
-    InstrumentingAgents* instrumentingAgents = instrumentingAgentsFor(executionContext);
-    return instrumentingAgents && instrumentingAgents->inspectorTimelineAgent();
-}
-
 void registerInstrumentingAgents(InstrumentingAgents* instrumentingAgents)
 {
     if (!instrumentingAgentsSet)