Perform TODO(gc) cleanup for TODO-lockdown.

src/spaces.cc

Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index 73abff3db9b3142b247a799f1ea4051fe9e6bb04..ac3c068d1509756ea810886fabd05a67048555fb 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -757,7 +757,7 @@ int PagedSpace::CountTotalPages() {
 
 
 void PagedSpace::Shrink() {
-  // TODO(gc) release half of pages?
+  // TODO(1614) Not implemented.
 }
 
 
@@ -2309,8 +2309,8 @@ void LargeObjectSpace::TearDown() {
 }
 
 
-MaybeObject* LargeObjectSpace::AllocateRawInternal(int object_size,
-                                                   Executability executable) {
+MaybeObject* LargeObjectSpace::AllocateRaw(int object_size,
+                                           Executability executable) {
   // Check if we want to force a GC before growing the old space further.
   // If so, fail the allocation.
   if (!heap()->always_allocate() &&
@@ -2318,7 +2318,6 @@ MaybeObject* LargeObjectSpace::AllocateRawInternal(int object_size,
     return Failure::RetryAfterGC(identity());
   }
 
-  // TODO(gc) isolates merge
   LargePage* page = heap()->isolate()->memory_allocator()->
       AllocateLargePage(object_size, executable, this);
   if (page == NULL) return Failure::RetryAfterGC(identity());
@@ -2336,24 +2335,6 @@ MaybeObject* LargeObjectSpace::AllocateRawInternal(int object_size,
 }
 
 
-MaybeObject* LargeObjectSpace::AllocateRawCode(int size_in_bytes) {
-  ASSERT(0 < size_in_bytes);
-  return AllocateRawInternal(size_in_bytes, EXECUTABLE);
-}
-
-
-MaybeObject* LargeObjectSpace::AllocateRawFixedArray(int size_in_bytes) {
-  ASSERT(0 < size_in_bytes);
-  return AllocateRawInternal(size_in_bytes, NOT_EXECUTABLE);
-}
-
-
-MaybeObject* LargeObjectSpace::AllocateRawData(int size_in_bytes) {
-  ASSERT(0 < size_in_bytes);
-  return AllocateRawInternal(size_in_bytes, NOT_EXECUTABLE);
-}
-
-
 // GC support
 MaybeObject* LargeObjectSpace::FindObject(Address a) {
   for (LargePage* page = first_page_;