cros: Rename startup_sound_played_ to oobe_startup_sound_played_

I spent some time porting this to LoginDisplayHost only to later
realize it only applies to oobe. Make that very clear/explicit it is
oobe-only.

Bug: 792654
Change-Id: I152b9399188cbd62451be2e6044620a30fc6f1e3
Reviewed-on: https://chromium-review.googlesource.com/824954Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Jacob Dufault <jdufault@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527024}

chrome/browser/chromeos/login/ui/login_display_host_webui.cc

@@ -416,7 +416,7 @@ class LoginDisplayHostWebUI::LoginWidgetDelegate
 
 LoginDisplayHostWebUI::LoginDisplayHostWebUI(const gfx::Rect& wallpaper_bounds)
     : wallpaper_bounds_(wallpaper_bounds),
-      startup_sound_played_(StartupUtils::IsOobeCompleted()),
+      oobe_startup_sound_played_(StartupUtils::IsOobeCompleted()),
       animation_weak_ptr_factory_(this) {
   if (ash_util::IsRunningInMash()) {
     // Animation, and initializing hidden, are not currently supported for Mash.
@@ -628,7 +628,7 @@ void LoginDisplayHostWebUI::SetStatusAreaVisible(bool visible) {
 void LoginDisplayHostWebUI::StartWizard(OobeScreen first_screen) {
   DisableKeyboardOverscroll();
 
-  TryToPlayStartupSound();
+  TryToPlayOobeStartupSound();
 
   // Keep parameters to restore if renderer crashes.
   restore_path_ = RESTORE_WIZARD;
@@ -928,7 +928,7 @@ void LoginDisplayHostWebUI::EmitLoginPromptVisibleCalled() {
 // LoginDisplayHostWebUI, chromeos::CrasAudioHandler::AudioObserver:
 
 void LoginDisplayHostWebUI::OnActiveOutputNodeChanged() {
-  TryToPlayStartupSound();
+  TryToPlayOobeStartupSound();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -1188,16 +1188,16 @@ void LoginDisplayHostWebUI::SetOobeProgressBarVisible(bool visible) {
   GetOobeUI()->ShowOobeUI(visible);
 }
 
-void LoginDisplayHostWebUI::TryToPlayStartupSound() {
+void LoginDisplayHostWebUI::TryToPlayOobeStartupSound() {
   if (is_voice_interaction_oobe_)
     return;
 
-  if (startup_sound_played_ || login_prompt_visible_time_.is_null() ||
+  if (oobe_startup_sound_played_ || login_prompt_visible_time_.is_null() ||
       !CrasAudioHandler::Get()->GetPrimaryActiveOutputNode()) {
     return;
   }
 
-  startup_sound_played_ = true;
+  oobe_startup_sound_played_ = true;
 
   // Don't try play startup sound if login prompt is already visible
   // for a long time or can't be played.
@@ -1214,7 +1214,7 @@ void LoginDisplayHostWebUI::OnLoginPromptVisible() {
   if (!login_prompt_visible_time_.is_null())
     return;
   login_prompt_visible_time_ = base::TimeTicks::Now();
-  TryToPlayStartupSound();
+  TryToPlayOobeStartupSound();
 }
 
 // static

chrome/browser/chromeos/login/ui/login_display_host_webui.h

@@ -178,7 +178,7 @@ class LoginDisplayHostWebUI : public LoginDisplayHost,
   // Tries to play startup sound. If sound can't be played right now,
   // for instance, because cras server is not initialized, playback
   // will be delayed.
-  void TryToPlayStartupSound();
+  void TryToPlayOobeStartupSound();
 
   // Called when login-prompt-visible signal is caught.
   void OnLoginPromptVisible();
@@ -279,7 +279,7 @@ class LoginDisplayHostWebUI : public LoginDisplayHost,
   // True when request to play startup sound was sent to
   // SoundsManager.
   // After OOBE is completed, this is always initialized with true.
-  bool startup_sound_played_ = false;
+  bool oobe_startup_sound_played_ = false;
 
   // Keeps a copy of the old Drag'n'Drop client, so that it would be disabled
   // during a login session and restored afterwards.