[heap] Replace NewSpacePageRange with PageRange

src/heap/spaces-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_SPACES_INL_H_
 #define V8_HEAP_SPACES_INL_H_
 
 #include "src/heap/incremental-marking.h"
 #include "src/heap/spaces.h"
 #include "src/isolate.h"
@@ skipping 10 matching lines @@
   return *this;
 }
 
 template <class PAGE_TYPE>
 PageIteratorImpl<PAGE_TYPE> PageIteratorImpl<PAGE_TYPE>::operator++(int) {
   PageIteratorImpl<PAGE_TYPE> tmp(*this);
   operator++();
   return tmp;
 }
 
-NewSpacePageRange::NewSpacePageRange(Address start, Address limit)
-    : range_(Page::FromAddress(start),
-             Page::FromAllocationAreaAddress(limit)->next_page()) {
-  SemiSpace::AssertValidRange(start, limit);
+PageRange::PageRange(Address start, Address limit)
+    : begin_(Page::FromAddress(start)),
+      end_(Page::FromAllocationAreaAddress(limit)->next_page()) {
+#ifdef DEBUG
+  if (begin_->InNewSpace()) {
+    SemiSpace::AssertValidRange(start, limit);
+  }
+#endif  // DEBUG
 }
 
 // -----------------------------------------------------------------------------
 // SemiSpaceIterator
 
 HeapObject* SemiSpaceIterator::Next() {
   while (current_ != limit_) {
     if (Page::IsAlignedToPageSize(current_)) {
       Page* page = Page::FromAllocationAreaAddress(current_);
       page = page->next_page();
@@ skipping 575 matching lines @@
     other->allocation_info_.Reset(nullptr, nullptr);
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_SPACES_INL_H_