Fix a bug that could occasionaly cause setInterval to stop

third_party/WebKit/Source/platform/TimerTest.cpp

 // Copyright 2015 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 "platform/Timer.h"
 
 #include "platform/testing/TestingPlatformSupport.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebThread.h"
@@ skipping 165 matching lines @@
         }
     }
 
     bool hasOneTimerTask() const
     {
         return m_timerTasks.size() == 1;
     }
 
     double nextTimerTaskDelaySecs() const
     {
-        ASSERT(hasOneTimerTask());
         return m_timerTasks.top().delaySeconds();
     }
 
     void shutdown() override {}
     std::unique_ptr<WebViewScheduler> createWebViewScheduler(blink::WebView*) override { return nullptr; }
     void suspendTimerQueue() override { }
     void resumeTimerQueue() override { }
     void addPendingNavigation(WebScheduler::NavigatingFrameType) override { }
     void removePendingNavigation(WebScheduler::NavigatingFrameType) override { }
     void onNavigationStarted() override { }
@@ skipping 278 matching lines @@
 
     timer.startOneShot(20, BLINK_FROM_HERE);
 
     ASSERT(hasOneTimerTask());
     EXPECT_FLOAT_EQ(20.0, nextTimerTaskDelaySecs());
 
     runUntilIdle();
     EXPECT_THAT(m_runTimes, ElementsAre(m_startTime + 10.0, m_startTime + 30.0));
 }
 
-TEST_F(TimerTest, PostingTimerTwiceWithSameRunTimeDoesNothing)
+TEST_F(TimerTest, PostingTimerTwiceWithSameRunTimeOnlyExecutesOnce)
 {
     Timer<TimerTest> timer(this, &TimerTest::countingTask);
     timer.startOneShot(10, BLINK_FROM_HERE);
     timer.startOneShot(10, BLINK_FROM_HERE);
 
-    ASSERT(hasOneTimerTask());
     EXPECT_FLOAT_EQ(10.0, nextTimerTaskDelaySecs());
 
     runUntilIdle();
     EXPECT_THAT(m_runTimes, ElementsAre(m_startTime + 10.0));
 }
 
 TEST_F(TimerTest, PostingTimerTwiceWithNewerRunTimeCancelsOriginalTask)
 {
     Timer<TimerTest> timer(this, &TimerTest::countingTask);
     timer.startOneShot(10, BLINK_FROM_HERE);
@@ skipping 276 matching lines @@
     TimerForTest<TimerTest> timer(this, &TimerTest::countingTask, &taskRunner);
     timer.startOneShot(0, BLINK_FROM_HERE);
 
     // Make sure the task was posted on taskRunner.
     EXPECT_FALSE(timerTasks.empty());
 }
 
 
 } // namespace
 } // namespace blink