Port count-based profiler to x64

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 657bee86570eaf5094dd86cd33ab18c66ff6551d..64cdc8e9d58d47321716d6c65ae02925feadb68d 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -120,13 +120,6 @@ class JumpPatchSite BASE_EMBEDDED {
 };
 
 
-// TODO(jkummerow): Obsolete as soon as x64 is updated. Remove.
-int FullCodeGenerator::self_optimization_header_size() {
-  UNREACHABLE();
-  return 10 * Instruction::kInstrSize;
-}
-
-
 // Generate code for a JS function.  On entry to the function the receiver
 // and arguments have been pushed on the stack left to right.  The actual
 // argument count matches the formal parameter count expected by the