Remove a static initializer that could potentially slow down startup time.

src/profile-generator.h

Index: src/profile-generator.h
===================================================================
--- src/profile-generator.h	(revision 9549)
+++ src/profile-generator.h	(working copy)
@@ -257,7 +257,7 @@
     typedef Address Key;
     typedef CodeEntryInfo Value;
     static const Key kNoKey;
-    static const Value kNoValue;
+    static const Value NoValue() { return CodeEntryInfo(NULL, 0); }
     static int Compare(const Key& a, const Key& b) {
       return a < b ? -1 : (a > b ? 1 : 0);
     }