Switch to standard integer types in ppapi/.

ppapi/proxy/ppb_message_loop_proxy.cc

Index: ppapi/proxy/ppb_message_loop_proxy.cc
diff --git a/ppapi/proxy/ppb_message_loop_proxy.cc b/ppapi/proxy/ppb_message_loop_proxy.cc
index c9ea5a802bcbf14ac34f244b074d5b7491e9524d..e05ec5cfd302b482fde3f20daac1671dec40ee92 100644
--- a/ppapi/proxy/ppb_message_loop_proxy.cc
+++ b/ppapi/proxy/ppb_message_loop_proxy.cc
@@ -4,6 +4,8 @@
 
 #include "ppapi/proxy/ppb_message_loop_proxy.h"
 
+#include <stddef.h>
+
 #include <vector>
 
 #include "base/bind.h"
@@ -178,7 +180,7 @@ bool MessageLoopResource::IsCurrent() const {
 void MessageLoopResource::PostClosure(
     const tracked_objects::Location& from_here,
     const base::Closure& closure,
-    int64 delay_ms) {
+    int64_t delay_ms) {
   if (task_runner_.get()) {
     task_runner_->PostDelayedTask(from_here, closure,
                                   base::TimeDelta::FromMilliseconds(delay_ms));