WTF: Move TypeTraits.cpp to test-only target.

third_party/WebKit/Source/wtf/TypeTraitsTest.cpp

Index: third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
diff --git a/third_party/WebKit/Source/wtf/TypeTraits.cpp b/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
similarity index 98%
rename from third_party/WebKit/Source/wtf/TypeTraits.cpp
rename to third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
index 9b8c10352f5621e19698769b6940772598cf8b8a..12fec336318e09017a29f60baf81d8ae0be5e4ea 100644
--- a/third_party/WebKit/Source/wtf/TypeTraits.cpp
+++ b/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
@@ -23,8 +23,12 @@
 
 #include "wtf/Noncopyable.h"
 
+// No gtest tests; only static_assert checks.
+
 namespace WTF {
 
+namespace {
+
 struct VirtualClass {
     virtual void A() { }
 };
@@ -99,4 +103,6 @@ static_assert((IsSubclassOfTemplate<TestDerivedClass, TestBaseClass>::value), "D
 typedef int IntArray[];
 typedef int IntArraySized[4];
 
+} // anonymous namespace
+
 } // namespace WTF