Print reason for disabling optimization. Kill --trace-bailout flag.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5630 matching lines @@
 
   // Indicates whether or not the code in the shared function support
   // deoptimization.
   inline bool has_deoptimization_support();
 
   // Enable deoptimization support through recompiled code.
   void EnableDeoptimizationSupport(Code* recompiled);
 
   // Disable (further) attempted optimization of all functions sharing this
   // shared function info.
-  void DisableOptimization();
+  void DisableOptimization(const char* reason);
 
   // Lookup the bailout ID and ASSERT that it exists in the non-optimized
   // code, returns whether it asserted (i.e., always true if assertions are
   // disabled).
   bool VerifyBailoutId(BailoutId id);
 
   // Check whether a inlined constructor can be generated with the given
   // prototype.
   bool CanGenerateInlineConstructor(Object* prototype);
 
@@ skipping 3271 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_