Use Chrome compatible naming for compiler specifics.

src/hydrogen-gvn.h

Index: src/hydrogen-gvn.h
diff --git a/src/hydrogen-gvn.h b/src/hydrogen-gvn.h
index 3cab59c7353dc9bb0287df13df77fb00c40b2eac..8cdeb9992bdf407c725afece62c0de493c691574 100644
--- a/src/hydrogen-gvn.h
+++ b/src/hydrogen-gvn.h
@@ -19,7 +19,7 @@ class OStream;
 // which can be used to represent side effects that cannot be expressed using
 // the GVNFlags of an HInstruction. These special side effects are tracked by a
 // SideEffectsTracker (see below).
-class SideEffects V8_FINAL {
+class SideEffects FINAL {
  public:
   static const int kNumberOfSpecials = 64 - kNumberOfFlags;
 
@@ -63,7 +63,7 @@ struct TrackedEffects;
 // SideEffects class (see above). This way unrelated global variable/inobject
 // field stores don't prevent hoisting and merging of global variable/inobject
 // field loads.
-class SideEffectsTracker V8_FINAL BASE_EMBEDDED {
+class SideEffectsTracker FINAL BASE_EMBEDDED {
  public:
   SideEffectsTracker() : num_global_vars_(0), num_inobject_fields_(0) {}
   SideEffects ComputeChanges(HInstruction* instr);
@@ -111,7 +111,7 @@ OStream& operator<<(OStream& os, const TrackedEffects& f);
 
 
 // Perform common subexpression elimination and loop-invariant code motion.
-class HGlobalValueNumberingPhase V8_FINAL : public HPhase {
+class HGlobalValueNumberingPhase FINAL : public HPhase {
  public:
   explicit HGlobalValueNumberingPhase(HGraph* graph);