replace COMPILE_ASSERT with static_assert in platform/

Source/platform/text/BidiContext.cpp

Index: Source/platform/text/BidiContext.cpp
diff --git a/Source/platform/text/BidiContext.cpp b/Source/platform/text/BidiContext.cpp
index 29c00f942595e4b37c0848dda6f3018459dfb83c..4572872004ea1b49dca23988831d41f85c947a60 100644
--- a/Source/platform/text/BidiContext.cpp
+++ b/Source/platform/text/BidiContext.cpp
@@ -34,7 +34,7 @@ struct SameSizeAsBidiContext : public RefCounted<SameSizeAsBidiContext> {
     void* parent;
 };
 
-COMPILE_ASSERT(sizeof(BidiContext) == sizeof(SameSizeAsBidiContext), BidiContext_should_stay_small);
+static_assert(sizeof(BidiContext) == sizeof(SameSizeAsBidiContext), "BidiContext should stay small");
 
 inline PassRefPtr<BidiContext> BidiContext::createUncached(unsigned char level, Direction direction, bool override, BidiEmbeddingSource source, BidiContext* parent)
 {