Replace OFFSET_OF with offsetof as far as possible.

src/ppc/simulator-ppc.cc

Index: src/ppc/simulator-ppc.cc
diff --git a/src/ppc/simulator-ppc.cc b/src/ppc/simulator-ppc.cc
index 118741bc323303410e411903dbaf1c8c6cf096af..261982c0b3f0abdb17468710b1a107815bb8c6f9 100644
--- a/src/ppc/simulator-ppc.cc
+++ b/src/ppc/simulator-ppc.cc
@@ -880,7 +880,7 @@ class Redirection {
   static Redirection* FromSwiInstruction(Instruction* swi_instruction) {
     char* addr_of_swi = reinterpret_cast<char*>(swi_instruction);
     char* addr_of_redirection =
-        addr_of_swi - OFFSET_OF(Redirection, swi_instruction_);
+        addr_of_swi - offsetof(Redirection, swi_instruction_);
     return reinterpret_cast<Redirection*>(addr_of_redirection);
   }