Remove some unused fields from class CompilationInfo.

src/handles.cc

Index: src/handles.cc
diff --git a/src/handles.cc b/src/handles.cc
index 78a7fcf9a9ec1e7bcc96fcb7b0b2089f9abd529b..d8a25b161ea5fb1da8319df07364e273b57c992b 100644
--- a/src/handles.cc
+++ b/src/handles.cc
@@ -785,14 +785,13 @@ bool CompileLazyShared(Handle<SharedFunctionInfo> shared,
 
 
 bool CompileLazy(Handle<JSFunction> function,
-                 Handle<Object> receiver,
                  ClearExceptionFlag flag) {
   if (function->shared()->is_compiled()) {
     function->set_code(function->shared()->code());
     function->shared()->set_code_age(0);
     return true;
   } else {
-    CompilationInfo info(function, 0, receiver);
+    CompilationInfo info(function, 0);
     bool result = CompileLazyHelper(&info, flag);
     PROFILE(FunctionCreateEvent(*function));
     return result;
@@ -801,14 +800,13 @@ bool CompileLazy(Handle<JSFunction> function,
 
 
 bool CompileLazyInLoop(Handle<JSFunction> function,
-                       Handle<Object> receiver,
                        ClearExceptionFlag flag) {
   if (function->shared()->is_compiled()) {
     function->set_code(function->shared()->code());
     function->shared()->set_code_age(0);
     return true;
   } else {
-    CompilationInfo info(function, 1, receiver);
+    CompilationInfo info(function, 1);
     bool result = CompileLazyHelper(&info, flag);
     PROFILE(FunctionCreateEvent(*function));
     return result;