Reland "Initial switch to Chromium-style CHECK_* and DCHECK_* macros.".

src/base/compiler-specific.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_BASE_COMPILER_SPECIFIC_H_
 #define V8_BASE_COMPILER_SPECIFIC_H_
 
 #include "include/v8config.h"
 
 // Annotate a typedef or function indicating it's ok if it's not used.
@@ skipping 33 matching lines @@
 
 // Annotate a function indicating the caller must examine the return value.
 // Use like:
 //   int foo() WARN_UNUSED_RESULT;
 #if V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT
 #define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
 #else
 #define WARN_UNUSED_RESULT /* NOT SUPPORTED */
 #endif
 
+
+// The C++ standard requires that static const members have an out-of-class
+// definition (in a single compilation unit), but MSVC chokes on this (when
+// language extensions, which are required, are enabled). (You're only likely to
+// notice the need for a definition if you take the address of the member or,
+// more commonly, pass it to a function that takes it as a reference argument --
+// probably an STL function.) This macro makes MSVC do the right thing. See
+// http://msdn.microsoft.com/en-us/library/34h23df8(v=vs.100).aspx for more
+// information. Use like:
+//
+// In .h file:
+//   struct Foo {
+//     static const int kBar = 5;
+//   };
+//
+// In .cc file:
+//   STATIC_CONST_MEMBER_DEFINITION const int Foo::kBar;
+#if V8_HAS_DECLSPEC_SELECTANY
+#define STATIC_CONST_MEMBER_DEFINITION __declspec(selectany)
+#else
+#define STATIC_CONST_MEMBER_DEFINITION
+#endif
+
 #endif  // V8_BASE_COMPILER_SPECIFIC_H_