Assert event timestamp to be monotonic and not from future

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp

Index: third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
diff --git a/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
index bd2e13b3454d6bae1e29e8fef232f7757c11b631..524869a2a98310a25ab59f3e0e82ce30614ced4a 100644
--- a/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
+++ b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
@@ -164,12 +164,12 @@ TestingPlatformSupportWithMockScheduler::TestingPlatformSupportWithMockScheduler
     // Set the work batch size to one so RunPendingTasks behaves as expected.
     m_scheduler->GetSchedulerHelperForTesting()->SetWorkBatchSizeForTesting(1);
 
-    WTF::setTimeFunctionsForTesting(getTestTime);
+    WTF::setMonotonicallyIncreasingTimeFunctionForTesting(getTestTime);
 }
 
 TestingPlatformSupportWithMockScheduler::~TestingPlatformSupportWithMockScheduler()
 {
-    WTF::setTimeFunctionsForTesting(nullptr);
+    WTF::setMonotonicallyIncreasingTimeFunctionForTesting(nullptr);
     m_scheduler->Shutdown();
 }
 
@@ -244,7 +244,8 @@ ScopedUnittestsEnvironmentSetup::ScopedUnittestsEnvironmentSetup(int argc, char*
     Platform::setCurrentPlatformForTesting(m_platform.get());
 
     WTF::Partitions::initialize(nullptr);
-    WTF::setTimeFunctionsForTesting(dummyCurrentTime);
+    WTF::setMonotonicallyIncreasingTimeFunctionForTesting(dummyCurrentTime);
+    WTF::setCurrentTimeFunctionForTesting(dummyCurrentTime);
     WTF::initialize(nullptr);
 
     m_compositorSupport = wrapUnique(new cc_blink::WebCompositorSupportImpl);