performCheckpoint   48 Source/bindings/v8/V8RecursionScope.cpp         Microtask::performCheckpoint();
performCheckpoint   40 Source/core/dom/Microtask.h     static void performCheckpoint();
performCheckpoint  135 Source/core/html/parser/HTMLScriptRunner.cpp         Microtask::performCheckpoint();
performCheckpoint  305 Source/core/html/parser/HTMLScriptRunner.cpp             Microtask::performCheckpoint();
performCheckpoint   72 Source/web/WebKit.cpp         WebCore::Microtask::performCheckpoint();