[ios clean] Use ToolsMenuConfiguration for Menu context.

ios/clean/chrome/browser/ui/tools/menu_view_controller.mm

Index: ios/clean/chrome/browser/ui/tools/menu_view_controller.mm
diff --git a/ios/clean/chrome/browser/ui/tools/menu_view_controller.mm b/ios/clean/chrome/browser/ui/tools/menu_view_controller.mm
index f226742d3e16ea2569ecf63d512ca19d3b341ba0..a1ed8dcb25c2933560ed015959ae6368259ceecc 100644
--- a/ios/clean/chrome/browser/ui/tools/menu_view_controller.mm
+++ b/ios/clean/chrome/browser/ui/tools/menu_view_controller.mm
@@ -27,12 +27,14 @@ const CGFloat kMenuItemHeight = 48;
 @property(nonatomic, strong) NSArray<ToolsMenuItem*>* menuItems;
 @property(nonatomic, strong)
     MenuOverflowControlsStackView* toolbarOverflowStackView;
+@property(nonatomic, assign) BOOL displayOverflowControls;
 @end
 
 @implementation MenuViewController
 @synthesize menuItems = _menuItems;
 @synthesize toolbarOverflowStackView = _toolbarOverflowStackView;
 @synthesize dispatcher = _dispatcher;
+@synthesize displayOverflowControls = _displayOverflowControls;
 
 - (void)loadView {
   CGRect frame;
@@ -76,7 +78,8 @@ const CGFloat kMenuItemHeight = 48;
 
   // Stack view to hold overflow ToolbarButtons.
   if (self.traitCollection.horizontalSizeClass ==
-      UIUserInterfaceSizeClassCompact) {
+          UIUserInterfaceSizeClassCompact &&
+      self.displayOverflowControls) {
     self.toolbarOverflowStackView =
         [[MenuOverflowControlsStackView alloc] init];
     // PLACEHOLDER: ToolsMenuButton might end up being part of the MenuVC's view
@@ -115,4 +118,8 @@ const CGFloat kMenuItemHeight = 48;
   _menuItems = menuItems;
 }
 
+- (void)canDisplayOverflowControls:(BOOL)displayOverflowControls {

[marq (ping after 24h), 2017/04/12 11:17:07]

This depends on device size/format, which is something I've been trying to keep
confined to the view controller layer. What do we gain by having this pushed in
from the mediator?

[sczs, 2017/04/12 15:06:08]

This also depends on who is displaying the ToolsMenu, since we won't display the
overflow controls on the TabGrid ToolsMenu for example.

[marq (ping after 24h), 2017/04/14 10:01:52]

Indeed! My mistake.

+  self.displayOverflowControls = displayOverflowControls;
+}
+
 @end