[Interpreter] Replace BytecodeRegisterAllocator with a simple bump pointer.

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 1403 matching lines @@
     "src/interpreter/bytecode-generator.h",
     "src/interpreter/bytecode-label.cc",
     "src/interpreter/bytecode-label.h",
     "src/interpreter/bytecode-operands.cc",
     "src/interpreter/bytecode-operands.h",
     "src/interpreter/bytecode-peephole-optimizer.cc",
     "src/interpreter/bytecode-peephole-optimizer.h",
     "src/interpreter/bytecode-peephole-table.h",
     "src/interpreter/bytecode-pipeline.cc",
     "src/interpreter/bytecode-pipeline.h",
-    "src/interpreter/bytecode-register-allocator.cc",
     "src/interpreter/bytecode-register-allocator.h",
     "src/interpreter/bytecode-register-optimizer.cc",
     "src/interpreter/bytecode-register-optimizer.h",
     "src/interpreter/bytecode-register.cc",
     "src/interpreter/bytecode-register.h",
     "src/interpreter/bytecode-traits.h",
     "src/interpreter/bytecodes.cc",
     "src/interpreter/bytecodes.h",
     "src/interpreter/constant-array-builder.cc",
     "src/interpreter/constant-array-builder.h",
@@ skipping 1499 matching lines @@
   ]
 
   configs = [
     ":external_config",
     ":internal_config_base",
   ]
 }
 
 v8_fuzzer("wasm_data_section_fuzzer") {
 }