PPC/s390: [objects.h splitting] Move classes related to api callbacks.

Port a9db2c74

R=marja@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:5402,v8:7570
LOG=N

Change-Id: Ife3c7463066eb747c27c1479c76106b51e568f92
Reviewed-on: https://chromium-review.googlesource.com/1042451Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#52968}

src/ppc/code-stubs-ppc.cc

@@ -15,6 +15,7 @@
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/isolate.h"
+#include "src/objects/api-callbacks.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/runtime/runtime.h"

src/s390/code-stubs-s390.cc

@@ -14,6 +14,7 @@
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/isolate.h"
+#include "src/objects/api-callbacks.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/runtime/runtime.h"