Revert r2372 to get the tree green again.

test/mjsunit/tools/tickprocessor-test.ignore-unknown

-Statistical profiling result from v8.log, (13 ticks, 2 unaccounted, 0 excluded).
-
- [Shared libraries]:
-   ticks  total  nonlib   name
-      2   18.2%    0.0%  /lib32/libm-2.7.so
-      1    9.1%    0.0%  ffffe000-fffff000
-
- [JavaScript]:
-   ticks  total  nonlib   name
-      1    9.1%   12.5%  LazyCompile: exp native math.js:41
-
- [C++]:
-   ticks  total  nonlib   name
-      2   18.2%   25.0%  v8::internal::Runtime_Math_exp(v8::internal::Arguments)
-      1    9.1%   12.5%  v8::internal::JSObject::LocalLookupRealNamedProperty(v8::internal::String*, v8::internal::LookupResult*)
-      1    9.1%   12.5%  v8::internal::HashTable<v8::internal::StringDictionaryShape, v8::internal::String*>::FindEntry(v8::internal::String*)
-      1    9.1%   12.5%  fegetexcept
-      1    9.1%   12.5%  exp
-
- [GC]:
-   ticks  total  nonlib   name
-      0    0.0%
-
- [Bottom up (heavy) profile]:
-  Note: percentage shows a share of a particular caller in the total
-  amount of its parent calls.
-  Callers occupying less than 2.0% are not shown.
-
-   ticks parent  name
-      2   18.2%  v8::internal::Runtime_Math_exp(v8::internal::Arguments)
-      2  100.0%    LazyCompile: exp native math.js:41
-      2  100.0%      Script: exp.js
-
-      2   18.2%  /lib32/libm-2.7.so
-      2  100.0%    LazyCompile: exp native math.js:41
-      2  100.0%      Script: exp.js
-
-      1    9.1%  v8::internal::JSObject::LocalLookupRealNamedProperty(v8::internal::String*, v8::internal::LookupResult*)
-      1  100.0%    Script: exp.js
-
-      1    9.1%  v8::internal::HashTable<v8::internal::StringDictionaryShape, v8::internal::String*>::FindEntry(v8::internal::String*)
-      1  100.0%    Script: exp.js
-
-      1    9.1%  ffffe000-fffff000
-
-      1    9.1%  fegetexcept
-      1  100.0%    LazyCompile: exp native math.js:41
-      1  100.0%      Script: exp.js
-
-      1    9.1%  exp
-      1  100.0%    LazyCompile: exp native math.js:41
-      1  100.0%      Script: exp.js
-
-      1    9.1%  LazyCompile: exp native math.js:41
-      1  100.0%    Script: exp.js
-