[turbofan] Remove fallback to TurboFan when Crankshaft bails out.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 8fac53e970322fee813cdfbd3e05cb07ef7a6239..7e658c34cb7598fba57f3c087b6a0bc0fbc9e575 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -143,7 +143,9 @@ CompilationInfo::CompilationInfo(ParseInfo* parse_info,
       debug_name_(debug_name) {}
 
 CompilationInfo::~CompilationInfo() {
-  DisableFutureOptimization();
+  if (GetFlag(kDisableFutureOptimization) && has_shared_info()) {
+    shared_info()->DisableOptimization(bailout_reason());
+  }
   dependencies()->Rollback();
   delete deferred_handles_;
 }
@@ -627,9 +629,9 @@ bool Renumber(ParseInfo* parse_info) {
     if (lit->dont_optimize_reason() != kNoReason) {
       shared_info->DisableOptimization(lit->dont_optimize_reason());
     }
-    shared_info->set_dont_crankshaft(
-        shared_info->dont_crankshaft() ||
-        (lit->flags() & AstProperties::kDontCrankshaft));
+    if (lit->flags() & AstProperties::kDontCrankshaft) {
+      shared_info->set_dont_crankshaft(true);
+    }
   }
   return true;
 }