Switch to standard integer types in ash/.

ash/display/display_layout_store.cc

Index: ash/display/display_layout_store.cc
diff --git a/ash/display/display_layout_store.cc b/ash/display/display_layout_store.cc
index c002e04e8f79769c6c6ac79ad2fbd8861dcd5748..aacbf623c14da7371e059b13b438822f49caa367 100644
--- a/ash/display/display_layout_store.cc
+++ b/ash/display/display_layout_store.cc
@@ -46,8 +46,8 @@ void DisplayLayoutStore::SetDefaultDisplayLayout(const DisplayLayout& layout) {
 }
 
 void DisplayLayoutStore::RegisterLayoutForDisplayIdPair(
-    int64 id1,
-    int64 id2,
+    int64_t id1,
+    int64_t id2,
     const DisplayLayout& layout) {
   auto key = CreateDisplayIdPair(id1, id2);
   paired_layouts_[key] = layout;
@@ -81,7 +81,7 @@ void DisplayLayoutStore::UpdateMultiDisplayState(const DisplayIdPair& pair,
 }
 
 void DisplayLayoutStore::UpdatePrimaryDisplayId(const DisplayIdPair& pair,
-                                                int64 display_id) {
+                                                int64_t display_id) {
   if (paired_layouts_.find(pair) == paired_layouts_.end())
     CreateDisplayLayout(pair);
   paired_layouts_[pair].primary_id = display_id;