replace COMPILE_ASSERT with static assert in wtf/

Source/wtf/dtoa/utils.h

Index: Source/wtf/dtoa/utils.h
diff --git a/Source/wtf/dtoa/utils.h b/Source/wtf/dtoa/utils.h
index 54bbfb30fb486e2be9d61f620f67c46a866cd68d..51dce3db994eda662ddd9aee806f599ec2961cd4 100644
--- a/Source/wtf/dtoa/utils.h
+++ b/Source/wtf/dtoa/utils.h
@@ -288,7 +288,7 @@ namespace double_conversion {
     inline Dest BitCast(const Source& source) {
         // Compile time assertion: sizeof(Dest) == sizeof(Source)
         // A compile error here means your Dest and Source have different sizes.
-        COMPILE_ASSERT(sizeof(Dest) == sizeof(Source), VerifySizesAreEqual);
+        static_assert(sizeof(Dest) == sizeof(Source), "sizes should be equal");
 
         Dest dest;
         memcpy(&dest, &source, sizeof(dest));