429168: fix for PdfJs regression

src/heap/heap.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 4525 matching lines @@
     case CODE_SPACE:
       return code_space_->Contains(addr);
     case MAP_SPACE:
       return map_space_->Contains(addr);
     case CELL_SPACE:
       return cell_space_->Contains(addr);
     case PROPERTY_CELL_SPACE:
       return property_cell_space_->Contains(addr);
     case LO_SPACE:
       return lo_space_->SlowContains(addr);
-    case INVALID_SPACE:
-      break;
   }
   UNREACHABLE();
   return false;
 }
 
 
 bool Heap::RootIsImmortalImmovable(int root_index) {
   switch (root_index) {
 #define CASE(name)               \
   case Heap::k##name##RootIndex: \
@@ skipping 1694 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 }
 }  // namespace v8::internal