Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

chrome/browser/ui/chrome_bubble_manager.h

+// Copyright 2015 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.
+
+#ifndef CHROME_BROWSER_UI_CHROME_BUBBLE_MANAGER_H_
+#define CHROME_BROWSER_UI_CHROME_BUBBLE_MANAGER_H_
+
+#include "components/bubble/bubble_manager.h"
+#include "components/keyed_service/core/keyed_service.h"
+#include "content/public/browser/navigation_details.h"
+
+namespace content {
+class WebContents;
+}  // content

[msw, 2015/08/13 03:37:21]

nit: "namespace content"

[hcarmona, 2015/08/15 02:03:18]

Acknowledged.

+
+class ChromeBubbleManager : public BubbleManager,

[msw, 2015/08/13 03:37:21]

Should this also handle browser window activation/size/position/etc. changes?

[groby-ooo-7-16, 2015/08/13 18:44:38]

None of these affect bubbles. (And hopefully never will). Or am I missing an
edge case here?

[msw, 2015/08/13 19:18:57]

If the bubbles don't close on deactivate, they potentially need to update on
anchor-window size/position changes. Views bubbles should already do this; I
don't know about Cocoa. There's also a possible edge case of the anchor window
changing while the bubble is activated (perhaps by 3rd party software?). The
more common cases here are possibly, but not necessarily, something the manager
should handle.

+                            public KeyedService,
+                            public base::SupportsWeakPtr<ChromeBubbleManager> {
+ public:
+  ChromeBubbleManager();
+  ~ChromeBubbleManager() override;
+
+  void FullscreenToggle(content::WebContents* context);
+  void TabBlur(content::WebContents* context);
+  void TabFocus(content::WebContents* context);
+  void TabDetached(content::WebContents* context);
+  void NavigationEntryCommitted(content::WebContents* context,
+                                const content::LoadCommittedDetails& details);
+  void WebContentsDestroyed(content::WebContents* context);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChromeBubbleManager);
+};
+
+#endif  // CHROME_BROWSER_UI_CHROME_BUBBLE_MANAGER_H_