DevTools: do not use RAII for sync native breakpoints, reuse AsyncTask where possible.

third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html

Index: third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html
diff --git a/third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html b/third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html
index 5f1267f2de4729c9f4e6a08e1d895bd0cb9bc7eb..cca9f1eb0be1d121479f2ce9a17e49a7d96fef8c 100644
--- a/third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html
+++ b/third_party/WebKit/LayoutTests/inspector/sources/debugger-frameworks/frameworks-skip-break-program.html
@@ -39,7 +39,7 @@ function test()
     function step2()
     {
         InspectorTest.DebuggerAgent.setPauseOnExceptions(SDK.DebuggerModel.PauseOnExceptionsState.PauseOnAllExceptions);
-        pane._setBreakpoint("instrumentation:setTimer");
+        pane._setBreakpoint("instrumentation:setTimeout");
         InspectorTest.resumeExecution(InspectorTest.waitUntilPaused.bind(InspectorTest, didPause));
     }
 
@@ -52,7 +52,7 @@ function test()
     function completeTest()
     {
         InspectorTest.DebuggerAgent.setPauseOnExceptions(SDK.DebuggerModel.PauseOnExceptionsState.DontPauseOnExceptions);
-        pane._removeBreakpoint("instrumentation:setTimer");
+        pane._removeBreakpoint("instrumentation:setTimeout");
         InspectorTest.completeDebuggerTest();
     }
 }