Revert of Implement timers by posting delayed tasks

Source/web/tests/TextFinderTest.cpp

Index: Source/web/tests/TextFinderTest.cpp
diff --git a/Source/web/tests/TextFinderTest.cpp b/Source/web/tests/TextFinderTest.cpp
index be10b97b0315d08321b3007f9812c1dd62e7ec60..8e52ec365c84b1820fcc37deacbbb00cb604f254 100644
--- a/Source/web/tests/TextFinderTest.cpp
+++ b/Source/web/tests/TextFinderTest.cpp
@@ -421,6 +421,11 @@
             return ensureFallback().monotonicallyIncreasingTime();
         }
 
+        virtual void setSharedTimerFireInterval(double interval) override
+        {
+            ensureFallback().setSharedTimerFireInterval(interval);
+        }
+
         virtual WebThread* currentThread() override { return ensureFallback().currentThread(); }
         virtual WebUnitTestSupport* unitTestSupport() override { return ensureFallback().unitTestSupport(); }
         virtual WebString defaultLocale() override { return ensureFallback().defaultLocale(); }