[interpreter] Clarify some names and comments.

test/unittests/interpreter/bytecode-array-builder-unittest.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/v8.h"
 
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-label.h"
 #include "src/interpreter/bytecode-register-allocator.h"
@@ skipping 167 matching lines @@
   builder.CompareOperation(Token::Value::EQ, reg, 1)
       .CompareOperation(Token::Value::NE, reg, 2)
       .CompareOperation(Token::Value::EQ_STRICT, reg, 3)
       .CompareOperation(Token::Value::LT, reg, 4)
       .CompareOperation(Token::Value::GT, reg, 5)
       .CompareOperation(Token::Value::LTE, reg, 6)
       .CompareOperation(Token::Value::GTE, reg, 7)
       .CompareOperation(Token::Value::INSTANCEOF, reg, 8)
       .CompareOperation(Token::Value::IN, reg, 9);
 
-  // Emit cast operator invocations.
-  builder.CastAccumulatorToNumber(reg)
-      .CastAccumulatorToJSObject(reg)
-      .CastAccumulatorToName(reg);
+  // Emit conversion operator invocations.
+  builder.ConvertAccumulatorToNumber(reg)
+      .ConvertAccumulatorToObject(reg)
+      .ConvertAccumulatorToName(reg);
 
   // Emit control flow. Return must be the last instruction.
   BytecodeLabel start;
   builder.Bind(&start);
   {
     // Short jumps with Imm8 operands
     BytecodeLabel after_jump;
     builder.Jump(&start)
         .Bind(&after_jump)
         .JumpIfNull(&start)
@@ skipping 653 matching lines @@
     iterator.Advance();
   }
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8