[ios clean] Refactors ToolsMenu and Tabs presentation

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

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/clean/chrome/browser/ui/tools/tools_menu_transition_controller.h"
+
+#import "ios/clean/chrome/browser/ui/presenters/menu_presentation_controller.h"
+
+@interface ToolsMenuTransitionController ()
+@property(nonatomic, weak) id<ToolsMenuCommands> dispatcher;
+@end
+
+@implementation ToolsMenuTransitionController
+@synthesize dispatcher = _dispatcher;
+
+- (instancetype)initWithDispatcher:(id<ToolsMenuCommands>)dispatcher {
+  self = [super init];
+  if (self) {
+    _dispatcher = dispatcher;
+  }
+  return self;
+}
+
+- (UIPresentationController*)
+presentationControllerForPresentedViewController:(UIViewController*)presented
+                        presentingViewController:(UIViewController*)presenting
+                            sourceViewController:(UIViewController*)source {
+  MenuPresentationController* menuPresentation =
+      [[MenuPresentationController alloc]
+          initWithPresentedViewController:presented
+                 presentingViewController:presenting];
+  menuPresentation.dispatcher = static_cast<id>(self.dispatcher);

[marq (ping after 24h), 2017/06/23 09:18:49]

Shouldn't menuPresentation.dispatcher already be an id<ToolsMenuCommands>?

[sczs, 2017/06/23 14:50:20]

Yes! I copied this code over and didn't change this.

+  return menuPresentation;
+}
+
+@end