DevTools: make StylesSourceMapping in charge of creating and removing UISourceCodes

third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html

Index: third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html b/third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html
index def843e660f272361de720984707c92b0afad291..d48defca4b71af2d8daefff8558e5f4e5b933ee4 100644
--- a/third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html
+++ b/third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-do-not-overwrite-css.html
@@ -62,7 +62,7 @@ function test()
             InspectorTest.cssModel.setStyleSheetText(styleSheet.id, 'body {color: blue}');
             // Expect StylesSourceMapping to sync styleSheet with network UISourceCode.
             // Persistence acts synchronously.
-            InspectorTest.addSniffer(Bindings.StylesSourceMapping.prototype, '_styleFileSyncedForTest', next);
+            InspectorTest.addSniffer(Bindings.StyleFile.prototype, '_styleFileSyncedForTest', next);
 
             function throwProtocolError(styleSheetId, textCallback) {
                 var error = 'FAKE PROTOCOL ERROR';