Upstream Chrome on iOS source code [9/11].

ios/chrome/browser/ui/tools_menu/tools_menu_context.mm

+// Copyright 2016 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/chrome/browser/ui/tools_menu/tools_menu_context.h"
+
+#import "base/ios/weak_nsobject.h"
+#import "base/logging.h"
+#import "ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h"
+
+@implementation ToolsMenuContext {
+  base::WeakNSObject<UIView> _displayView;
+  base::WeakNSObject<UIButton> _toolsMenuButton;
+  base::WeakNSObject<ReadingListMenuNotifier> _readingListMenuNotifier;
+}
+
+@synthesize inTabSwitcher = _inTabSwitcher;
+@synthesize noOpenedTabs = _noOpenedTabs;
+@synthesize inIncognito = _inIncognito;
+
+- (instancetype)initWithDisplayView:(UIView*)displayView {
+  if (self = [super init]) {
+    _displayView.reset(displayView);
+    _readingListMenuNotifier.reset();
+  }
+  return self;
+}
+
+- (instancetype)init {
+  NOTREACHED();
+  return nil;
+}
+
+- (UIEdgeInsets)toolsButtonInsets {
+  return self.toolsMenuButton ? [self.toolsMenuButton imageEdgeInsets]
+                              : UIEdgeInsetsZero;
+}
+
+- (CGRect)sourceRect {
+  // Set the origin for the tools popup to the horizontal center of the tools
+  // menu button.
+  return self.toolsMenuButton
+             ? [self.displayView convertRect:self.toolsMenuButton.bounds
+                                    fromView:self.toolsMenuButton]
+             : CGRectZero;
+}
+
+- (void)setToolsMenuButton:(UIButton*)toolsMenuButton {
+  _toolsMenuButton.reset(toolsMenuButton);
+}
+
+- (UIButton*)toolsMenuButton {
+  return _toolsMenuButton;
+}
+
+- (UIView*)displayView {
+  return _displayView;
+}
+
+- (void)setReadingListMenuNotifier:
+    (ReadingListMenuNotifier*)readingListMenuNotifier {
+  _readingListMenuNotifier.reset(readingListMenuNotifier);
+}
+
+- (ReadingListMenuNotifier*)readingListMenuNotifier {
+  return _readingListMenuNotifier;
+}
+
+@end