Add missing cast to make MSVC happier.

src/isolate.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1590 matching lines @@
     state_ = UNINITIALIZED;
   }
 }
 
 
 void Isolate::PushToPartialSnapshotCache(Object* obj) {
   int length = serialize_partial_snapshot_cache_length();
   int capacity = serialize_partial_snapshot_cache_capacity();
 
   if (length >= capacity) {
-    int new_capacity = (capacity + 10) * 1.2;
+    int new_capacity = static_cast<int>((capacity + 10) * 1.2);
     Object** new_array = new Object*[new_capacity];
     for (int i = 0; i < length; i++) {
       new_array[i] = serialize_partial_snapshot_cache()[i];
     }
     if (capacity != 0) delete[] serialize_partial_snapshot_cache();
     set_serialize_partial_snapshot_cache(new_array);
     set_serialize_partial_snapshot_cache_capacity(new_capacity);
   }
 
   serialize_partial_snapshot_cache()[length] = obj;
@@ skipping 372 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal