provisionalDataSource 1799 Source/web/WebFrameImpl.cpp     return static_cast<WebDataSourceImpl*>(provisionalDataSource());
provisionalDataSource  153 Source/web/WebFrameImpl.h     virtual WebDataSource* provisionalDataSource() const OVERRIDE;
provisionalDataSource 5118 Source/web/tests/WebFrameTest.cpp         WebDataSource* ds = frame->provisionalDataSource();
provisionalDataSource  376 public/web/WebFrame.h     virtual WebDataSource* provisionalDataSource() const = 0;