CpuProfiler: extract DeoptInfo fill in code into a static function.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 31aead88ff22a4c6a4867f535e6935b8dfea0e32..b177873a7c22c7988010ab25d23c155ff608204f 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -184,11 +184,12 @@ class Deoptimizer : public Malloced {
 
   struct DeoptInfo {
     DeoptInfo(SourcePosition position, const char* m, DeoptReason d)
-        : position(position), mnemonic(m), deopt_reason(d) {}
+        : position(position), mnemonic(m), deopt_reason(d), inlining_id(0) {}
 
     SourcePosition position;
     const char* mnemonic;
     DeoptReason deopt_reason;
+    int inlining_id;
   };
 
   static DeoptInfo GetDeoptInfo(Code* code, byte* from);