Add the c++ code part of bindings2/

sky/engine/bindings2/exception_state_placeholder.cc

Index: sky/engine/bindings2/exception_state_placeholder.cc
diff --git a/sky/engine/core/css/Rect.cpp b/sky/engine/bindings2/exception_state_placeholder.cc
similarity index 50%
copy from sky/engine/core/css/Rect.cpp
copy to sky/engine/bindings2/exception_state_placeholder.cc
index b1b0f75ad895fd275d759f0625a8e43b916a5bad..cc75213df267654ba622dce9a341dc2b10d8f1a2 100644
--- a/sky/engine/core/css/Rect.cpp
+++ b/sky/engine/bindings2/exception_state_placeholder.cc
@@ -3,10 +3,17 @@
 // found in the LICENSE file.
 
 #include "sky/engine/config.h"
-#include "sky/engine/core/css/Rect.h"
+#include "sky/engine/bindings2/exception_state_placeholder.h"
 
 namespace blink {
 
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(RectBase)
+#if ENABLE(ASSERT)
 
+NoExceptionStateAssertionChecker::NoExceptionStateAssertionChecker(
+    const char* file,
+    int line) {
 }
+
+#endif
+
+}  // namespace blink