Revert r12625 due to sandbox incompatibility.

src/spaces.cc

Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index d286002ac26487f4e4a011d91a4919d1226b0cbc..62d826316e3f17e4bda9f60cf252ce9509d1dacc 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -488,18 +488,6 @@ void MemoryChunk::Unlink() {
 }
 
 
-size_t MemoryChunk::CommittedPhysicalMemory() {
-  size_t physical;
-  size_t size = area_size();
-  if (VirtualMemory::CommittedPhysicalSizeInRegion(
-          area_start_, size, &physical)) {
-    return physical;
-  } else {
-    return size;
-  }
-}
-
-
 MemoryChunk* MemoryAllocator::AllocateChunk(intptr_t body_size,
                                             Executability executable,
                                             Space* owner) {
@@ -832,16 +820,6 @@ void PagedSpace::TearDown() {
 }
 
 
-size_t PagedSpace::CommittedPhysicalMemory() {
-  size_t size = 0;
-  PageIterator it(this);
-  while (it.has_next()) {
-    size += it.next()->CommittedPhysicalMemory();
-  }
-  return size;
-}
-
-
 MaybeObject* PagedSpace::FindObject(Address addr) {
   // Note: this function can only be called on precisely swept spaces.
   ASSERT(!heap()->mark_compact_collector()->in_use());
@@ -1407,17 +1385,6 @@ bool SemiSpace::Uncommit() {
 }
 
 
-size_t SemiSpace::CommittedPhysicalMemory() {
-  if (!is_committed()) return 0;
-  size_t size = 0;
-  NewSpacePageIterator it(this);
-  while (it.has_next()) {
-    size += it.next()->CommittedPhysicalMemory();
-  }
-  return size;
-}
-
-
 bool SemiSpace::GrowTo(int new_capacity) {
   if (!is_committed()) {
     if (!Commit()) return false;
@@ -2722,17 +2689,6 @@ MaybeObject* LargeObjectSpace::AllocateRaw(int object_size,
 }
 
 
-size_t LargeObjectSpace::CommittedPhysicalMemory() {
-  size_t size = 0;
-  LargePage* current = first_page_;
-  while (current != NULL) {
-    size += current->CommittedPhysicalMemory();
-    current = current->next_page();
-  }
-  return size;
-}
-
-
 // GC support
 MaybeObject* LargeObjectSpace::FindObject(Address a) {
   LargePage* page = FindPage(a);