Use Chrome compatible naming for compiler specifics.

src/compiler/source-position.h

Index: src/compiler/source-position.h
diff --git a/src/compiler/source-position.h b/src/compiler/source-position.h
index b81582fd99edfbd1ee47fa9c1058cdeb74fa83ac..778f067161a895b526d75c24f9b0f943050e459c 100644
--- a/src/compiler/source-position.h
+++ b/src/compiler/source-position.h
@@ -14,7 +14,7 @@ namespace compiler {
 
 // Encapsulates encoding and decoding of sources positions from which Nodes
 // originated.
-class SourcePosition V8_FINAL {
+class SourcePosition FINAL {
  public:
   explicit SourcePosition(int raw = kUnknownPosition) : raw_(raw) {}
 
@@ -43,7 +43,7 @@ inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) {
 }
 
 
-class SourcePositionTable V8_FINAL {
+class SourcePositionTable FINAL {
  public:
   class Scope {
    public: