Fix numerous bugs introduced by reducing Page::kMaxHeapObjectSize.

src/serialize.cc

Index: src/serialize.cc
diff --git a/src/serialize.cc b/src/serialize.cc
index 00a601ffd95ff15f0131d56e555fca6cd4b0144c..cc1cbdf8b2474d5c8b28efcbd5b01bf322a508ac 100644
--- a/src/serialize.cc
+++ b/src/serialize.cc
@@ -577,8 +577,7 @@ Deserializer::Deserializer(SnapshotByteSource* source) : source_(source) {
 Address Deserializer::Allocate(int space_index, Space* space, int size) {
   Address address;
   if (!SpaceIsLarge(space_index)) {
-    ASSERT(!SpaceIsPaged(space_index) ||
-           size <= Page::kPageSize - Page::kObjectStartOffset);
+    ASSERT(!SpaceIsPaged(space_index) || size <= Page::kMaxHeapObjectSize);
     MaybeObject* maybe_new_allocation;
     if (space_index == NEW_SPACE) {
       maybe_new_allocation =
@@ -593,7 +592,7 @@ Address Deserializer::Allocate(int space_index, Space* space, int size) {
     high_water_[space_index] = address + size;
   } else {
     ASSERT(SpaceIsLarge(space_index));
-    ASSERT(size > Page::kPageSize - Page::kObjectStartOffset);
+    ASSERT(size > Page::kMaxHeapObjectSize);
     LargeObjectSpace* lo_space = reinterpret_cast<LargeObjectSpace*>(space);
     Object* new_allocation;
     if (space_index == kLargeData) {