Modify toolbar action bar layout for material design

chrome/browser/ui/toolbar/toolbar_actions_bar.h

Index: chrome/browser/ui/toolbar/toolbar_actions_bar.h
diff --git a/chrome/browser/ui/toolbar/toolbar_actions_bar.h b/chrome/browser/ui/toolbar/toolbar_actions_bar.h
index 6d3bf9359373c523cfedd601d99965a07a28a026..7fed96aeb7baef8b49d2c1bcc5834e638b3ec9eb 100644
--- a/chrome/browser/ui/toolbar/toolbar_actions_bar.h
+++ b/chrome/browser/ui/toolbar/toolbar_actions_bar.h
@@ -48,13 +48,11 @@ class ToolbarActionsBar : public ToolbarActionsModel::Observer {
  public:
   // A struct to contain the platform settings.
   struct PlatformSettings {
-    explicit PlatformSettings(bool in_overflow_mode);
+    PlatformSettings();
 
-    // The padding that comes before the first icon in the container.
-    int left_padding;
-    // The padding following the final icon in the container.
-    int right_padding;
-    // The spacing between each of the icons.
+    // The spacing between each of the icons, between the start of the
+    // container and the first item, and between the last item and end of
+    // the container.
     int item_spacing;
     // The number of icons per row in the overflow menu.
     int icons_per_overflow_menu_row;