From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Heilig Benedek <benecene@gmail.com>
Date: Thu, 18 Oct 2018 17:08:03 -0700
Subject: tts.patch

* Adds patch in //chrome/browser/speech/tts_controller_impl.cc
  to disable calls using chrome profile class.
* Adds patch in //chrome/browser/speech/tts_message_filter.cc
  to remove reference to browser context when its signaled for
  destruction from content layer.

diff --git a/chrome/browser/speech/tts_controller_delegate_impl.cc b/chrome/browser/speech/tts_controller_delegate_impl.cc
index e96b0cef21bec8925d4adf1e8692dc00f5ec6f5f..7ec07534aa3628873c9fe784fa0235f3c5c7f15f 100644
--- a/chrome/browser/speech/tts_controller_delegate_impl.cc
+++ b/chrome/browser/speech/tts_controller_delegate_impl.cc
@@ -213,6 +213,7 @@ void TtsControllerDelegateImpl::UpdateUtteranceDefaultsFromPrefs(
 const PrefService* TtsControllerDelegateImpl::GetPrefService(
     content::TtsUtterance* utterance) {
   const PrefService* prefs = nullptr;
+#if 0
   // The utterance->GetBrowserContext() is null in tests.
   if (utterance->GetBrowserContext()) {
     const Profile* profile =
@@ -220,6 +221,7 @@ const PrefService* TtsControllerDelegateImpl::GetPrefService(
     if (profile)
       prefs = profile->GetPrefs();
   }
+#endif
   return prefs;
 }
 
diff --git a/chrome/browser/speech/tts_message_filter.cc b/chrome/browser/speech/tts_message_filter.cc
index cf0841622b99ad6637314284bcdbd83060a404cc..779b51992c180a76ed8a2c492297416aa557d214 100644
--- a/chrome/browser/speech/tts_message_filter.cc
+++ b/chrome/browser/speech/tts_message_filter.cc
@@ -10,8 +10,11 @@
 #include "base/logging.h"
 #include "base/task/post_task.h"
 #include "chrome/browser/chrome_notification_types.h"
+#if 0
 #include "chrome/browser/profiles/profile.h"
+#endif
 #include "chrome/common/tts_messages.h"
+#include "components/keyed_service/content/browser_context_keyed_service_shutdown_notifier_factory.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_task_traits.h"
 #include "content/public/browser/notification_service.h"
@@ -19,6 +22,29 @@
 
 using content::BrowserThread;
 
+namespace {
+
+class TtsMessageFilterShutdownNotifierFactory
+    : public BrowserContextKeyedServiceShutdownNotifierFactory {
+ public:
+  static TtsMessageFilterShutdownNotifierFactory* GetInstance() {
+    return base::Singleton<TtsMessageFilterShutdownNotifierFactory>::get();
+  }
+
+ private:
+  friend struct base::DefaultSingletonTraits<
+      TtsMessageFilterShutdownNotifierFactory>;
+
+  TtsMessageFilterShutdownNotifierFactory()
+      : BrowserContextKeyedServiceShutdownNotifierFactory("TtsMessageFilter") {}
+
+  ~TtsMessageFilterShutdownNotifierFactory() override {}
+
+  DISALLOW_COPY_AND_ASSIGN(TtsMessageFilterShutdownNotifierFactory);
+};
+
+}  // namespace
+
 TtsMessageFilter::TtsMessageFilter(content::BrowserContext* browser_context)
     : BrowserMessageFilter(TtsMsgStart),
       browser_context_(browser_context),
@@ -26,28 +52,27 @@ TtsMessageFilter::TtsMessageFilter(content::BrowserContext* browser_context)
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   content::TtsController::GetInstance()->AddVoicesChangedDelegate(this);
 
-  // TODO(dmazzoni): make it so that we can listen for a BrowserContext
-  // being destroyed rather than a Profile.  http://crbug.com/444668
-  Profile* profile = Profile::FromBrowserContext(browser_context);
-  notification_registrar_.Add(this,
-                              chrome::NOTIFICATION_PROFILE_DESTROYED,
-                              content::Source<Profile>(profile));
+  browser_context_shutdown_notifier_ =
+      TtsMessageFilterShutdownNotifierFactory::GetInstance()
+          ->Get(browser_context)
+          ->Subscribe(base::Bind(&TtsMessageFilter::BrowserContextDestroyed,
+                                 base::RetainedRef(this)));
 
   // Balanced in OnChannelClosingInUIThread() to keep the ref-count be non-zero
   // until all pointers to this class are invalidated.
   AddRef();
 }
 
-void TtsMessageFilter::OverrideThreadForMessage(
-    const IPC::Message& message, BrowserThread::ID* thread) {
+void TtsMessageFilter::OverrideThreadForMessage(const IPC::Message& message,
+                                                BrowserThread::ID* thread) {
   switch (message.type()) {
-  case TtsHostMsg_InitializeVoiceList::ID:
-  case TtsHostMsg_Speak::ID:
-  case TtsHostMsg_Pause::ID:
-  case TtsHostMsg_Resume::ID:
-  case TtsHostMsg_Cancel::ID:
-    *thread = BrowserThread::UI;
-    break;
+    case TtsHostMsg_InitializeVoiceList::ID:
+    case TtsHostMsg_Speak::ID:
+    case TtsHostMsg_Pause::ID:
+    case TtsHostMsg_Resume::ID:
+    case TtsHostMsg_Cancel::ID:
+      *thread = BrowserThread::UI;
+      break;
   }
 }
 
@@ -211,10 +236,8 @@ void TtsMessageFilter::Cleanup() {
   content::TtsController::GetInstance()->RemoveUtteranceEventDelegate(this);
 }
 
-void TtsMessageFilter::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
+void TtsMessageFilter::BrowserContextDestroyed() {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   browser_context_ = nullptr;
-  notification_registrar_.RemoveAll();
+  browser_context_shutdown_notifier_.reset();
 }
diff --git a/chrome/browser/speech/tts_message_filter.h b/chrome/browser/speech/tts_message_filter.h
index ffb607fbb275b0a75dba592f2f5f5afb881214e2..99780e56674af749a231f0e85b89e6a6ed3743d6 100644
--- a/chrome/browser/speech/tts_message_filter.h
+++ b/chrome/browser/speech/tts_message_filter.h
@@ -8,6 +8,7 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
+#include "components/keyed_service/core/keyed_service_shutdown_notifier.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
@@ -21,7 +22,6 @@ class BrowserContext;
 struct TtsUtteranceRequest;
 
 class TtsMessageFilter : public content::BrowserMessageFilter,
-                         public content::NotificationObserver,
                          public content::UtteranceEventDelegate,
                          public content::VoicesChangedDelegate {
  public:
@@ -64,15 +64,13 @@ class TtsMessageFilter : public content::BrowserMessageFilter,
   // about to be deleted.
   bool Valid();
 
-  // content::NotificationObserver implementation.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
+  void BrowserContextDestroyed();
 
+  std::unique_ptr<KeyedServiceShutdownNotifier::Subscription>
+      browser_context_shutdown_notifier_;
   content::BrowserContext* browser_context_;
   mutable base::Lock mutex_;
   mutable bool valid_;
-  content::NotificationRegistrar notification_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(TtsMessageFilter);
 };