Fix invalid use of int in Zone.

src/compiler/raw-machine-assembler.cc

 // Copyright 2014 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/code-factory.h"
 #include "src/compiler/pipeline.h"
 #include "src/compiler/raw-machine-assembler.h"
 #include "src/compiler/scheduler.h"
 
 namespace v8 {
@@ skipping 62 matching lines @@
   Node* branch = NewNode(common()->Branch(), condition);
   schedule()->AddBranch(CurrentBlock(), branch, Use(true_val), Use(false_val));
   current_block_ = NULL;
 }
 
 
 void RawMachineAssembler::Switch(Node* index, Label** succ_labels,
                                  size_t succ_count) {
   DCHECK_NE(schedule()->end(), current_block_);
   Node* sw = NewNode(common()->Switch(succ_count), index);
-  BasicBlock** succ_blocks =
-      zone()->NewArray<BasicBlock*>(static_cast<int>(succ_count));
+  BasicBlock** succ_blocks = zone()->NewArray<BasicBlock*>(succ_count);
   for (size_t index = 0; index < succ_count; ++index) {
     succ_blocks[index] = Use(succ_labels[index]);
   }
   schedule()->AddSwitch(CurrentBlock(), sw, succ_blocks, succ_count);
   current_block_ = nullptr;
 }
 
 
 void RawMachineAssembler::Return(Node* value) {
   schedule()->AddReturn(CurrentBlock(), value);
@@ skipping 78 matching lines @@
   Node* node = graph()->NewNode(op, input_count, inputs, incomplete);
   BasicBlock* block = op->opcode() == IrOpcode::kParameter ? schedule()->start()
                                                            : CurrentBlock();
   schedule()->AddNode(block, node);
   return node;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8