Consistently use CompilationInfo::AbortOptimization.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index 47d459a28206252581c9d4c35a2b0f42228864e8..d9f0fefa850e723ccaaa84be2913453f13f18541 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -235,9 +235,10 @@ class CompilationInfo {
   // Determines whether or not to insert a self-optimization header.
   bool ShouldSelfOptimize();
 
-  // Disable all optimization attempts of this info for the rest of the
-  // current compilation pipeline.
-  void AbortOptimization();
+  // Reset code to the unoptimized version when optimization is aborted.
+  void AbortOptimization() {
+    SetCode(handle(shared_info()->code()));
+  }
 
   void set_deferred_handles(DeferredHandles* deferred_handles) {
     ASSERT(deferred_handles_ == NULL);