Fix multi-isolate build:

src/hydrogen.cc

 // Copyright 2011 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 588 matching lines @@
   LChunkBuilder builder(info, this, &allocator);
   LChunk* chunk = builder.Build();
   if (chunk == NULL) return Handle<Code>::null();
 
   if (!FLAG_alloc_lithium) return Handle<Code>::null();
 
   allocator.Allocate(chunk);
 
   if (!FLAG_use_lithium) return Handle<Code>::null();
 
-  MacroAssembler assembler(NULL, 0);
+  MacroAssembler assembler(info->isolate(), NULL, 0);
   LCodeGen generator(chunk, &assembler, info);
 
   if (FLAG_eliminate_empty_blocks) {
     chunk->MarkEmptyBlocks();
   }
 
   if (generator.GenerateCode()) {
     if (FLAG_trace_codegen) {
       PrintF("Crankshaft Compiler - ");
     }
@@ skipping 5331 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify();
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal