Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

components/bubble/bubble_manager.h

Index: components/bubble/bubble_manager.h
diff --git a/components/bubble/bubble_manager.h b/components/bubble/bubble_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..04c6895b91df0f732f5a5d32b5d97aa3aa01e871
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+++ b/components/bubble/bubble_manager.h
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+// 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 COMPONENTS_BUBBLE_BUBBLE_MANAGER_H__
+#define COMPONENTS_BUBBLE_BUBBLE_MANAGER_H__
+
+#include "base/memory/scoped_vector.h"
+#include "base/memory/weak_ptr.h"
+#include "components/bubble/bubble_controller.h"
+
+class BubbleDelegate;
+typedef base::WeakPtr<BubbleDelegate> BubbleReference;
+
+/**
+ * BubbleManager should exist per profile.
+ * Showing bubbles should go through the BubbleManager.
+ *
+ * This class assumes that we won't be showing a lot of bubbles simultaneously.
+ * If this assumption ever stops being true, please file a bug against whatever
+ * is bombarding the user with many bubbles at the same time.
+ */
+class BubbleManager {
+ public:
+  virtual ~BubbleManager();
+
+  BubbleReference ShowBubble(scoped_ptr<BubbleDelegate> bubble);
+  void CloseBubble(BubbleReference bubble);
+
+ protected:
+  // This class should be subclassed to hook into all the appropriate events.
+  BubbleManager();
+
+  // For mass updating of bubbles:
+  void ShowMatchingBubbles(void* context);
+  void CloseMatchingBubbles(void* context, bool force,
+                            BubbleCloseReason reason);
+  void UpdateMatchingBubbles(void* context);
+
+  // Override and call Show on the controller when it's convenient.
+  virtual void ScheduleShowBubble(
+      base::WeakPtr<BubbleController> controller) = 0;
+
+  ScopedVector<BubbleController> controllers_;
+
+  DISALLOW_COPY_AND_ASSIGN(BubbleManager);
+};
+
+#endif  // COMPONENTS_BUBBLE_BUBBLE_MANAGER_H__