Start untangling the avatar switcher from BrowserNonClientFrameView

chrome/browser/ui/views/frame/avatar_button_manager.cc

+// 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.
+
+#include "chrome/browser/ui/views/frame/avatar_button_manager.h"
+
+#include "chrome/browser/ui/view_ids.h"
+#include "chrome/browser/ui/views/frame/browser_frame.h"
+#include "chrome/browser/ui/views/frame/browser_view.h"
+#include "chrome/browser/ui/views/profiles/new_avatar_button.h"
+
+AvatarButtonManager::AvatarButtonManager(BrowserNonClientFrameView* frame_view)
+    : frame_view_(frame_view), view_(nullptr) {}
+
+void AvatarButtonManager::Update(AvatarButtonStyle style) {
+  BrowserView* browser_view = frame_view_->browser_view();
+  BrowserFrame* frame = frame_view_->frame();
+
+  // This should never be called in incognito mode.
+  DCHECK(browser_view->IsRegularOrGuestSession());
+
+  if (browser_view->ShouldShowAvatar()) {
+    if (!view_) {
+      view_ = new NewAvatarButton(this, style, browser_view->browser());
+      view_->set_id(VIEW_ID_NEW_AVATAR_BUTTON);
+      frame_view_->AddChildView(view_);
+      frame->GetRootView()->Layout();
+    }
+  } else if (view_) {
+    delete view_;
+    view_ = nullptr;
+    frame->GetRootView()->Layout();
+  }
+}
+
+void AvatarButtonManager::ButtonPressed(views::Button* sender,
+                                       const ui::Event& event) {
+  DCHECK_EQ(view_, sender);
+  BrowserWindow::AvatarBubbleMode mode =
+      BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT;
+  if ((event.IsMouseEvent() &&
+       static_cast<const ui::MouseEvent&>(event).IsRightMouseButton()) ||
+      (event.type() == ui::ET_GESTURE_LONG_PRESS)) {
+    mode = BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH;
+  }
+  frame_view_->browser_view()->ShowAvatarBubbleFromAvatarButton(
+      mode, signin::ManageAccountsParams(),
+      signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
+}