Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

components/bubble/bubble_controller.cc

+// 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.
+
+#include "components/bubble/bubble_controller.h"
+
+#include "components/bubble/bubble_delegate.h"
+
+BubbleController::BubbleController(scoped_ptr<BubbleDelegate> delegate)
+    : delegate_(delegate.Pass()), bubble_ui_(nullptr), weak_ptr_factory_(this) {
+  DCHECK(delegate_);
+}
+
+BubbleController::~BubbleController() {}
+
+void BubbleController::Show() {
+  if (bubble_ui_)
+    return;
+
+  // TODO(hcarmona): log that bubble was shown.
+  bubble_ui_ = delegate_->BuildBubbleUI();
+
+  DCHECK(bubble_ui_);
+  bubble_ui_->Show();
+}
+
+void BubbleController::Hide(BubbleCloseReason reason) {

[msw, 2015/08/13 03:37:22]

nit: reason isn't used.

[hcarmona, 2015/08/15 02:03:19]

Acknowledged.

+  if (!bubble_ui_)

[msw, 2015/08/13 03:37:22]

nit: should we DCHECK against this?

[hcarmona, 2015/08/15 02:03:19]

Done.

+    return;
+
+  // TODO(hcarmona): log that bubble was hidden.
+  bubble_ui_->Hide();
+  bubble_ui_.reset();
+}
+
+void BubbleController::UpdateAnchorPosition() {
+  DCHECK(bubble_ui_);
+  bubble_ui_->UpdateAnchorPosition();
+}
+
+bool BubbleController::ShouldUpdateBubble() {

[msw, 2015/08/13 03:37:22]

nit: const?

[hcarmona, 2015/08/15 02:03:19]

Acknowledged.

+  if (!bubble_ui_)
+    return true;  // If UI isn't shown, then it can be udpated.

[msw, 2015/08/13 03:37:22]

nit: updated spelling

[msw, 2015/08/13 03:37:22]

Can you elaborate a bit more, how can UI that isn't shown be updated?
What does an update mean? Perhaps explain in the header.

[hcarmona, 2015/08/15 02:03:19]

This is specific to the permission bubbles. May not be necessary.
Removed for now.

+  return bubble_ui_->CanAcceptUpdate();
+}
+
+bool BubbleController::ShouldClose() const {
+  return delegate_->ShouldCloseOnHide();
+}
+
+void BubbleController::Close() {
+  weak_ptr_factory_.InvalidateWeakPtrs();

[msw, 2015/08/13 03:37:22]

Huh? Is this instance going to be torn down now or something?

[hcarmona, 2015/08/13 20:50:35]

Permission bubbles want to show another bubble when this one closes. We
invalidate the weak pointers so that the permission bubble queue knows
that it can now show another bubble.

[msw, 2015/08/13 21:41:37]

The permission code should attempt to show another bubble when the response is
received, not when the bubble object is closed. That might be effectively the
same here, so this workaround might still be necessary, but maybe not.

[hcarmona, 2015/08/15 02:03:19]

Moved this to the destructor. Still explicitly calling it to avoid
ambiguity when reading the code.

+  delegate_->DidClose();
+}
+
+bool BubbleController::MatchesContext(void* context) const {
+  return delegate_->GetContext() == context;
+}
+
+base::WeakPtr<BubbleController> BubbleController::AsWeakPtr() {
+  return weak_ptr_factory_.GetWeakPtr();
+}