| Index: components/view_manager/server_view_drawn_tracker.cc
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| diff --git a/components/view_manager/server_view_drawn_tracker.cc b/components/view_manager/server_view_drawn_tracker.cc
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| deleted file mode 100644
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| index f513161bf050532bf3346eef02fe368df4bf5b76..0000000000000000000000000000000000000000
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| --- a/components/view_manager/server_view_drawn_tracker.cc
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| +++ /dev/null
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| @@ -1,72 +0,0 @@
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| -// Copyright 2015 The Chromium Authors. All rights reserved.
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| -// Use of this source code is governed by a BSD-style license that can be
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| -// found in the LICENSE file.
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| -
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| -#include "components/view_manager/server_view_drawn_tracker.h"
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| -
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| -#include "components/view_manager/server_view.h"
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| -#include "components/view_manager/server_view_drawn_tracker_observer.h"
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| -
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| -namespace view_manager {
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| -
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| -ServerViewDrawnTracker::ServerViewDrawnTracker(
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| -    ServerView* view,
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| -    ServerViewDrawnTrackerObserver* observer)
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| -    : view_(view), observer_(observer), drawn_(view->IsDrawn()) {
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| -  AddObservers();
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| -}
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| -
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| -ServerViewDrawnTracker::~ServerViewDrawnTracker() {
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| -  RemoveObservers();
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| -}
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| -
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| -void ServerViewDrawnTracker::SetDrawn(ServerView* ancestor, bool drawn) {
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| -  if (drawn == drawn_)
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| -    return;
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| -
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| -  drawn_ = drawn;
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| -  observer_->OnDrawnStateChanged(ancestor, view_, drawn);
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| -}
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| -
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| -void ServerViewDrawnTracker::AddObservers() {
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| -  if (!view_)
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| -    return;
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| -
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| -  for (ServerView* v = view_; v; v = v->parent()) {
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| -    v->AddObserver(this);
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| -    views_.insert(v);
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| -  }
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| -}
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| -
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| -void ServerViewDrawnTracker::RemoveObservers() {
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| -  for (ServerView* view : views_)
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| -    view->RemoveObserver(this);
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| -
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| -  views_.clear();
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| -}
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| -
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| -void ServerViewDrawnTracker::OnViewDestroyed(ServerView* view) {
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| -  // As views are removed before being destroyed, resulting in
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| -  // OnViewHierarchyChanged() and us removing ourself as an observer, the only
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| -  // view we should ever get notified of destruction on is |view_|.
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| -  DCHECK_EQ(view, view_);
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| -  RemoveObservers();
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| -  view_ = nullptr;
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| -  SetDrawn(nullptr, false);
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| -}
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| -
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| -void ServerViewDrawnTracker::OnViewHierarchyChanged(ServerView* view,
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| -                                                    ServerView* new_parent,
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| -                                                    ServerView* old_parent) {
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| -  RemoveObservers();
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| -  AddObservers();
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| -  const bool is_drawn = view_->IsDrawn();
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| -  SetDrawn(is_drawn ? nullptr : old_parent, is_drawn);
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| -}
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| -
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| -void ServerViewDrawnTracker::OnViewVisibilityChanged(ServerView* view) {
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| -  const bool is_drawn = view_->IsDrawn();
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| -  SetDrawn(is_drawn ? nullptr : view->parent(), is_drawn);
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| -}
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| -
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| -}  // namespace view_manager
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| 
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