Merge WTF::initializeMainThread into WTF::initialize

third_party/WebKit/Source/wtf/testing/RunAllTests.cpp

Index: third_party/WebKit/Source/wtf/testing/RunAllTests.cpp
diff --git a/third_party/WebKit/Source/wtf/testing/RunAllTests.cpp b/third_party/WebKit/Source/wtf/testing/RunAllTests.cpp
index 1ed14a8fc6e92912bf623447b12983a2e170bc7b..65c81cb2eae09b0f69f83b50f37cb89d1245841e 100644
--- a/third_party/WebKit/Source/wtf/testing/RunAllTests.cpp
+++ b/third_party/WebKit/Source/wtf/testing/RunAllTests.cpp
@@ -30,7 +30,6 @@
 
 #include "wtf/CryptographicallyRandomNumber.h"
 #include "wtf/CurrentTime.h"
-#include "wtf/MainThread.h"
 #include "wtf/Partitions.h"
 #include "wtf/WTF.h"
 #include <base/test/test_suite.h>
@@ -45,7 +44,6 @@ int main(int argc, char** argv)
 {
     WTF::Partitions::initialize(nullptr);
     WTF::setTimeFunctionsForTesting(dummyCurrentTime);
-    WTF::initialize();
-    WTF::initializeMainThread(0);
+    WTF::initialize(nullptr);
     return base::RunUnitTestsUsingBaseTestSuite(argc, argv);
 }