[heap] Removes spaces.h include from heap.h

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 964c9d2c5fb164d0d1d5e46eec480c1b12332bc5..372f5cddf134f3e8662e7a1a21d067883b52ee2e 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -17,6 +17,7 @@
 #include "src/base/platform/mutex.h"
 #include "src/flags.h"
 #include "src/globals.h"
+#include "src/heap/heap.h"
 #include "src/heap/marking.h"
 #include "src/list.h"
 #include "src/objects.h"
@@ -1868,50 +1869,6 @@ class FreeList {
   DISALLOW_IMPLICIT_CONSTRUCTORS(FreeList);
 };
 
-
-class AllocationResult {
- public:
-  // Implicit constructor from Object*.
-  AllocationResult(Object* object)  // NOLINT
-      : object_(object) {
-    // AllocationResults can't return Smis, which are used to represent
-    // failure and the space to retry in.
-    CHECK(!object->IsSmi());
-  }
-
-  AllocationResult() : object_(Smi::FromInt(NEW_SPACE)) {}
-
-  static inline AllocationResult Retry(AllocationSpace space = NEW_SPACE) {
-    return AllocationResult(space);
-  }
-
-  inline bool IsRetry() { return object_->IsSmi(); }
-
-  template <typename T>
-  bool To(T** obj) {
-    if (IsRetry()) return false;
-    *obj = T::cast(object_);
-    return true;
-  }
-
-  Object* ToObjectChecked() {
-    CHECK(!IsRetry());
-    return object_;
-  }
-
-  inline AllocationSpace RetrySpace();
-
- private:
-  explicit AllocationResult(AllocationSpace space)
-      : object_(Smi::FromInt(static_cast<int>(space))) {}
-
-  Object* object_;
-};
-
-
-STATIC_ASSERT(sizeof(AllocationResult) == kPointerSize);
-
-
 // LocalAllocationBuffer represents a linear allocation area that is created
 // from a given {AllocationResult} and can be used to allocate memory without
 // synchronization.