Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/tab_contents/retargeting_details.h

Index: chrome/browser/tab_contents/retargeting_details.h
diff --git a/chrome/browser/tab_contents/retargeting_details.h b/chrome/browser/tab_contents/retargeting_details.h
index c80a1ca054ba7e276916abc6a288c35c747ad473..53728f9d6b0037d4a37c187aae835cb2876f6ae4 100644
--- a/chrome/browser/tab_contents/retargeting_details.h
+++ b/chrome/browser/tab_contents/retargeting_details.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_TAB_CONTENTS_RETARGETING_DETAILS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_RETARGETING_DETAILS_H_
 
+#include <stdint.h>
+
 #include "url/gurl.h"
 
 namespace content {
@@ -18,7 +20,7 @@ struct RetargetingDetails {
 
   // The routing id of the source render frame from which the retargeting was
   // triggered.
-  int64 source_render_frame_id;
+  int64_t source_render_frame_id;
 
   // The target URL.
   GURL target_url;