Refactor TimeBase to post tasks. Workers to use real Idle tasks.

Source/web/tests/TextFinderTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "web/TextFinder.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
@@ skipping 403 matching lines @@
         {
             return ensureFallback().getTraceCategoryEnabledFlag(categoryName);
         }
 
         // These two methods allow timers to work correctly.
         virtual double monotonicallyIncreasingTime() override
         {
             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(); }
         virtual WebCompositorSupport* compositorSupport() override { return ensureFallback().compositorSupport(); }
 
         double m_timeCounter;
         Platform* m_fallbackPlatform;
     };
 
     TimeProxyPlatform m_proxyTimePlatform;
@@ skipping 33 matching lines @@
     // There will be only one iteration before timeout, because increment
     // of the TimeProxyPlatform timer is greater than timeout threshold.
     textFinder().scopeStringMatches(identifier, searchPattern, findOptions, true);
     while (textFinder().scopingInProgress())
         runPendingTasks();
 
     EXPECT_EQ(4, textFinder().totalMatchCount());
 }
 
 } // namespace