Switch to standard integer types in ash/.

ash/display/display_change_observer_chromeos.cc

Index: ash/display/display_change_observer_chromeos.cc
diff --git a/ash/display/display_change_observer_chromeos.cc b/ash/display/display_change_observer_chromeos.cc
index 3ff867035644902c29428f1d6f6aa418c52ce9ef..8b3d617ee7b579fb70f9b8c8a3e3ebf96ab21b7d 100644
--- a/ash/display/display_change_observer_chromeos.cc
+++ b/ash/display/display_change_observer_chromeos.cc
@@ -164,7 +164,7 @@ ui::MultipleDisplayState DisplayChangeObserver::GetStateForDisplayIds(
                            ui::MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
 }
 
-bool DisplayChangeObserver::GetResolutionForDisplayId(int64 display_id,
+bool DisplayChangeObserver::GetResolutionForDisplayId(int64_t display_id,
                                                       gfx::Size* size) const {
   DisplayMode mode;
   if (!Shell::GetInstance()->display_manager()->GetSelectedModeForDisplayId(
@@ -180,7 +180,7 @@ void DisplayChangeObserver::OnDisplayModeChanged(
   UpdateInternalDisplayId(display_states);
 
   std::vector<DisplayInfo> displays;
-  std::set<int64> ids;
+  std::set<int64_t> ids;
   for (const ui::DisplaySnapshot* state : display_states) {
     const ui::DisplayMode* mode_info = state->current_mode();
     if (!mode_info)
@@ -234,7 +234,7 @@ void DisplayChangeObserver::OnDisplayModeChanged(
       name = l10n_util::GetStringUTF8(IDS_ASH_STATUS_TRAY_UNKNOWN_DISPLAY_NAME);
 
     bool has_overscan = state->has_overscan();
-    int64 id = state->display_id();
+    int64_t id = state->display_id();
     ids.insert(id);
 
     displays.push_back(DisplayInfo(id, name, has_overscan));