[Courgette] Refactor: Add and use Instruction*Receptor classes; call ParseFile() in 2 passes.

courgette/disassembler_win32_x86.cc

 // Copyright (c) 2011 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.
 
 #include "courgette/disassembler_win32_x86.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "courgette/assembly_program.h"
@@ skipping 13 matching lines @@
   return Address32ToRVA(Read32LittleEndian(p));
 }
 
 RVA DisassemblerWin32X86::Address32ToRVA(uint32_t address) const {
   if (address < image_base() || address >= image_base() + size_of_image_)
     return kNoRVA;
   return static_cast<RVA>(address - image_base());
 }
 
 CheckBool DisassemblerWin32X86::EmitAbs(Label* label,
-                                        AssemblyProgram* program) {
-  return program->EmitAbs32(label);
+                                        InstructionReceptor* receptor) const {
+  return receptor->EmitAbs32(label);
 }
 
 void DisassemblerWin32X86::ParseRel32RelocsFromSection(const Section* section) {
   // TODO(sra): use characteristic.
   bool isCode = strcmp(section->name, ".text") == 0;
   if (!isCode)
     return;
 
   FileOffset start_file_offset = section->file_offset_of_raw_data;
   FileOffset end_file_offset = start_file_offset + section->size_of_raw_data;
@@ skipping 10 matching lines @@
   finder.Find(start_pointer, end_pointer, start_rva, end_rva, abs32_locations_);
   finder.SwapRel32Locations(&rel32_locations_);
 
 #if COURGETTE_HISTOGRAM_TARGETS
   DCHECK(rel32_target_rvas_.empty());
   finder.SwapRel32TargetRVAs(&rel32_target_rvas_);
 #endif
 }
 
 }  // namespace courgette