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..06255d1bdf66a59615c3b75ff027d81ee64891a2
--- /dev/null
+++ b/components/bubble/bubble_manager.h
@@ -0,0 +1,38 @@
+// 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 "components/bubble/bubble_controller.h"
+
+class BubbleDelegate;
+
+/**
+ * BubbleManager should exist per profile.
+ * Showing bubbles should go through the BubbleManager.
+ */
+class BubbleManager {
+ public:
+  explicit BubbleManager();
+  virtual ~BubbleManager();
+
+  void ShowBubble(BubbleDelegate* bubble);
+  void HideBubble(BubbleDelegate* bubble);
+  bool IsBubbleVisible(BubbleDelegate* bubble);
+
+  // TODO(hcarmona): remove this.
+  void UpdateBubblePosition(BubbleDelegate* bubble);
+
+ private:
+  // Only the BubbleController should call NotifyBubbleHidden.
+  friend class BubbleController;
+  void NotifyBubbleHidden(BubbleController* controller,
+                          BubbleCloseReason reason);
+
+  ScopedVector<BubbleController> controllers_;
+};
+
+#endif  // COMPONENTS_BUBBLE_BUBBLE_MANAGER_H__