Move SourcePosition into separate header file.

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 1642 matching lines @@
 
   // Mark address of a debug break slot.
   void RecordDebugBreakSlot(RelocInfo::Mode mode);
 
   // Record a comment relocation entry that can be used by a disassembler.
   // Use --code-comments to enable.
   void RecordComment(const char* msg);
 
   // Record a deoptimization reason that can be used by a log or cpu profiler.
   // Use --trace-deopt to enable.
-  void RecordDeoptReason(const int reason, const SourcePosition position);
+  void RecordDeoptReason(const int reason, int raw_position);
 
   void PatchConstantPoolAccessInstruction(int pc_offset, int offset,
                                           ConstantPoolEntry::Access access,
                                           ConstantPoolEntry::Type type) {
     // No embedded constant pool support.
     UNREACHABLE();
   }
 
   // Writes a single word of data in the code stream.
   // Used for inline tables, e.g., jump-tables.
@@ skipping 515 matching lines @@
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_ASSEMBLER_X64_H_