Removes Experimental hotword-always-on feature.

chrome/browser/ui/app_list/hotword_background_activity_monitor.cc

Index: chrome/browser/ui/app_list/hotword_background_activity_monitor.cc
diff --git a/chrome/browser/ui/app_list/hotword_background_activity_monitor.cc b/chrome/browser/ui/app_list/hotword_background_activity_monitor.cc
deleted file mode 100644
index a5c16a518d171c9ded9610199d2b29a9835c199f..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/hotword_background_activity_monitor.cc
+++ /dev/null
@@ -1,180 +0,0 @@
-// Copyright 2014 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 "chrome/browser/ui/app_list/hotword_background_activity_monitor.h"
-
-#include "chrome/browser/ui/app_list/hotword_background_activity_delegate.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_list.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/browser/ui/tabs/tab_utils.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/web_contents.h"
-
-#if defined(USE_ASH)
-#include "ash/shell.h"
-#endif
-
-#if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/idle_detector.h"
-#endif
-
-namespace app_list {
-
-#if defined(OS_CHROMEOS)
-namespace {
-const int kIdleTimeoutInMin = 5;
-}
-#endif
-
-HotwordBackgroundActivityMonitor::HotwordBackgroundActivityMonitor(
-    HotwordBackgroundActivityDelegate* delegate)
-    : delegate_(delegate),
-      locked_(false),
-      is_idle_(false) {
-  BrowserList::AddObserver(this);
-  BrowserList* browsers =
-      BrowserList::GetInstance(chrome::GetActiveDesktop());
-  for (BrowserList::const_iterator iter = browsers->begin();
-       iter != browsers->end(); ++iter) {
-    (*iter)->tab_strip_model()->AddObserver(this);
-  }
-  MediaCaptureDevicesDispatcher::GetInstance()->AddObserver(this);
-
-#if defined(USE_ASH)
-  if (ash::Shell::HasInstance())
-    ash::Shell::GetInstance()->AddShellObserver(this);
-#endif
-
-#if defined(OS_CHROMEOS)
-  idle_detector_.reset(new chromeos::IdleDetector(
-      base::Bind(&HotwordBackgroundActivityMonitor::OnIdleStateChanged,
-                 base::Unretained(this),
-                 false),
-      base::Bind(&HotwordBackgroundActivityMonitor::OnIdleStateChanged,
-                 base::Unretained(this),
-                 true)));
-  idle_detector_->Start(base::TimeDelta::FromMinutes(kIdleTimeoutInMin));
-#endif
-}
-
-HotwordBackgroundActivityMonitor::~HotwordBackgroundActivityMonitor() {
-#if defined(USE_ASH)
-  if (ash::Shell::HasInstance())
-    ash::Shell::GetInstance()->RemoveShellObserver(this);
-#endif
-
-  BrowserList* browsers =
-      BrowserList::GetInstance(chrome::GetActiveDesktop());
-  for (BrowserList::const_iterator iter = browsers->begin();
-       iter != browsers->end(); ++iter) {
-    (*iter)->tab_strip_model()->RemoveObserver(this);
-  }
-  BrowserList::RemoveObserver(this);
-}
-
-bool HotwordBackgroundActivityMonitor::IsHotwordBackgroundActive() {
-  return !is_idle_ && !locked_ && recording_renderer_ids_.empty();
-}
-
-void HotwordBackgroundActivityMonitor::OnBrowserAdded(Browser* browser) {
-  browser->tab_strip_model()->AddObserver(this);
-}
-
-void HotwordBackgroundActivityMonitor::OnBrowserRemoved(Browser* browser) {
-  browser->tab_strip_model()->RemoveObserver(this);
-}
-
-void HotwordBackgroundActivityMonitor::TabClosingAt(
-    TabStripModel* tab_strip_model,
-    content::WebContents* contents,
-    int index) {
-  std::set<int>::const_iterator iter =
-      recording_renderer_ids_.find(contents->GetRenderProcessHost()->GetID());
-  if (iter == recording_renderer_ids_.end())
-    return;
-  recording_renderer_ids_.erase(iter);
-  NotifyActivityChange();
-}
-
-void HotwordBackgroundActivityMonitor::TabChangedAt(
-    content::WebContents* contents,
-    int index,
-    TabStripModelObserver::TabChangeType change_type) {
-  // Audio recording state change may emit TabChangedAt with ALL change_type.
-  if (change_type != TabStripModelObserver::ALL)
-    return;
-
-  bool was_empty = recording_renderer_ids_.empty();
-
-  bool recording = chrome::GetTabMediaStateForContents(contents) ==
-      TAB_MEDIA_STATE_RECORDING;
-  recording |= recording_contents_for_test_.find(contents) !=
-      recording_contents_for_test_.end();
-  if (recording) {
-    recording_renderer_ids_.insert(contents->GetRenderProcessHost()->GetID());
-  } else {
-    recording_renderer_ids_.erase(contents->GetRenderProcessHost()->GetID());
-  }
-  if (was_empty != recording_renderer_ids_.empty())
-    NotifyActivityChange();
-}
-
-#if defined(USE_ASH)
-void HotwordBackgroundActivityMonitor::OnLockStateChanged(bool locked) {
-  if (locked_ == locked)
-    return;
-
-  // TODO(mukai): consider non-ash environment. Right now this feature is
-  // ChromeOS only, so ash always exists.
-  locked_ = locked;
-  NotifyActivityChange();
-}
-#endif
-
-void HotwordBackgroundActivityMonitor::OnRequestUpdate(
-    int render_process_id,
-    int render_view_id,
-    const content::MediaStreamDevice& device,
-    const content::MediaRequestState state) {
-  // Don't care the request from myself.
-  if (render_process_id == delegate_->GetRenderProcessID())
-    return;
-
-  bool was_empty = recording_renderer_ids_.empty();
-  if (state == content::MEDIA_REQUEST_STATE_REQUESTED ||
-      state == content::MEDIA_REQUEST_STATE_PENDING_APPROVAL ||
-      state == content::MEDIA_REQUEST_STATE_OPENING ||
-      state == content::MEDIA_REQUEST_STATE_DONE) {
-    recording_renderer_ids_.insert(render_process_id);
-  } else {
-    recording_renderer_ids_.erase(render_process_id);
-  }
-  if (was_empty != recording_renderer_ids_.empty())
-    NotifyActivityChange();
-}
-
-void HotwordBackgroundActivityMonitor::OnIdleStateChanged(bool is_idle) {
-  if (is_idle_ == is_idle)
-    return;
-
-  is_idle_ = is_idle;
-  NotifyActivityChange();
-}
-
-void HotwordBackgroundActivityMonitor::NotifyActivityChange() {
-  delegate_->OnHotwordBackgroundActivityChanged();
-}
-
-void HotwordBackgroundActivityMonitor::AddWebContentsToWhitelistForTest(
-    content::WebContents* contents) {
-  recording_contents_for_test_.insert(contents);
-}
-
-void HotwordBackgroundActivityMonitor::RemoveWebContentsFromWhitelistForTest(
-    content::WebContents* contents) {
-  recording_contents_for_test_.erase(contents);
-}
-
-}  // namespace app_list