diff --git a/atom/browser/api/atom_api_browser_window_mac.mm b/atom/browser/api/atom_api_browser_window_mac.mm
index 95c6c43e826c..46cabd5062e7 100644
--- a/atom/browser/api/atom_api_browser_window_mac.mm
+++ b/atom/browser/api/atom_api_browser_window_mac.mm
@@ -80,30 +80,24 @@ void BrowserWindow::UpdateDraggableRegions(
   // Draggable regions is implemented by having the whole web view draggable
   // (mouseDownCanMoveWindow) and overlaying regions that are not draggable.
   draggable_regions_ = regions;
-  std::vector<gfx::Rect> system_drag_exclude_areas;
+  std::vector<gfx::Rect> drag_exclude_rects;
   if (regions.empty()) {
-    system_drag_exclude_areas.push_back(
-        gfx::Rect(0, 0, webViewWidth, webViewHeight));
+    drag_exclude_rects.push_back(gfx::Rect(0, 0, webViewWidth, webViewHeight));
   } else {
-    system_drag_exclude_areas = CalculateNonDraggableRegions(
+    drag_exclude_rects = CalculateNonDraggableRegions(
         DraggableRegionsToSkRegion(regions), webViewWidth, webViewHeight);
   }
 
   if (window_->browser_view())
-    window_->browser_view()->UpdateDraggableRegions(system_drag_exclude_areas);
+    window_->browser_view()->UpdateDraggableRegions(drag_exclude_rects);
 
   // Create and add a ControlRegionView for each region that needs to be
   // excluded from the dragging.
-  for (std::vector<gfx::Rect>::const_iterator iter =
-           system_drag_exclude_areas.begin();
-       iter != system_drag_exclude_areas.end();
-       ++iter) {
+  for (const auto& rect : drag_exclude_rects) {
     base::scoped_nsobject<NSView> controlRegion(
         [[ControlRegionView alloc] initWithFrame:NSZeroRect]);
-    [controlRegion setFrame:NSMakeRect(iter->x(),
-                                       webViewHeight - iter->bottom(),
-                                       iter->width(),
-                                       iter->height())];
+    [controlRegion setFrame:NSMakeRect(rect.x(), webViewHeight - rect.bottom(),
+                                       rect.width(), rect.height())];
     [webView addSubview:controlRegion];
   }
 
diff --git a/atom/browser/native_browser_view_mac.mm b/atom/browser/native_browser_view_mac.mm
index 9634f20f9828..1bb73e788362 100644
--- a/atom/browser/native_browser_view_mac.mm
+++ b/atom/browser/native_browser_view_mac.mm
@@ -194,7 +194,7 @@ void NativeBrowserViewMac::SetBackgroundColor(SkColor color) {
 }
 
 void NativeBrowserViewMac::UpdateDraggableRegions(
-    const std::vector<gfx::Rect>& system_drag_exclude_areas) {
+    const std::vector<gfx::Rect>& drag_exclude_rects) {
   NSView* webView = GetInspectableWebContentsView()->GetNativeView();
 
   NSInteger superViewHeight = NSHeight([webView.superview bounds]);
@@ -230,15 +230,13 @@ void NativeBrowserViewMac::UpdateDraggableRegions(
                                     webViewHeight)];
 
   // Then, on top of that, add "exclusion zones"
-  for (auto iter = system_drag_exclude_areas.begin();
-       iter != system_drag_exclude_areas.end();
-       ++iter) {
+  for (const auto& rect : drag_exclude_rects) {
     base::scoped_nsobject<NSView> controlRegion(
         [[ExcludeDragRegionView alloc] initWithFrame:NSZeroRect]);
-    [controlRegion setFrame:NSMakeRect(iter->x() - webViewX,
-                                       webViewHeight - iter->bottom() + webViewY,
-                                       iter->width(),
-                                       iter->height())];
+    [controlRegion setFrame:NSMakeRect(rect.x() - webViewX,
+                                       webViewHeight - rect.bottom() + webViewY,
+                                       rect.width(),
+                                       rect.height())];
     [dragRegion addSubview:controlRegion];
   }