Move identical code from platform specific assemblers to assembler.cc

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
diff --git a/src/ia32/assembler-ia32.h b/src/ia32/assembler-ia32.h
index d556e1bcada187df0e5f60ba7fa672423eb09c88..a17b539bac8e61c3a54aa5e9d74f1682120a16b8 100644
--- a/src/ia32/assembler-ia32.h
+++ b/src/ia32/assembler-ia32.h
@@ -1261,9 +1261,8 @@ class Assembler : public AssemblerBase {
   void RecordDebugBreakSlot();
 
   // Record a comment relocation entry that can be used by a disassembler.
-  // Use --code-comments to enable, or provide "force = true" flag to always
-  // write a comment.
-  void RecordComment(const char* msg, bool force = false);
+  // 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.