Some micro-optimizations in the scheduler.

src/compiler/schedule.h

Index: src/compiler/schedule.h
diff --git a/src/compiler/schedule.h b/src/compiler/schedule.h
index 95b93b3e0d6e8400d4f565aa268e65800ffd3356..9c9667f8d3f1d5319649f80ac685dbf25c06b2c6 100644
--- a/src/compiler/schedule.h
+++ b/src/compiler/schedule.h
@@ -146,10 +146,10 @@ class BasicBlock FINAL : public ZoneObject {
   void set_deferred(bool deferred) { deferred_ = deferred; }
 
   int32_t dominator_depth() const { return dominator_depth_; }
-  void set_dominator_depth(int32_t dominator_depth);
+  void set_dominator_depth(int32_t depth) { dominator_depth_ = depth; }
 
   BasicBlock* dominator() const { return dominator_; }
-  void set_dominator(BasicBlock* dominator);
+  void set_dominator(BasicBlock* dominator) { dominator_ = dominator; }
 
   BasicBlock* loop_header() const { return loop_header_; }
   void set_loop_header(BasicBlock* loop_header);