From e526f5a7174af56a5b9f90061970ac133631290b Mon Sep 17 00:00:00 2001
From: Ralph Giles <giles@mozilla.com>
Date: Fri, 13 Jun 2014 11:47:28 -0700
Subject: [PATCH] Backed out changeset d437a1b97e7c. Doesn't build.

---
 widget/cocoa/nsAppShell.mm | 93 --------------------------------------
 1 file changed, 93 deletions(-)

diff --git a/widget/cocoa/nsAppShell.mm b/widget/cocoa/nsAppShell.mm
index 33489a980262..a4adf83cf8b5 100644
--- a/widget/cocoa/nsAppShell.mm
+++ b/widget/cocoa/nsAppShell.mm
@@ -36,70 +36,9 @@
 #include "pratom.h"
 
 #include "npapi.h"
-#include <IOKit/pwr_mgt/IOPMLib.h>
-#include "nsIDOMWakeLockListener.h"
-#include "nsIPowerManagerService.h"
 
 using namespace mozilla::widget;
 
-// A wake lock listener that disables screen saver when requested by
-// Gecko. For example when we're playing video in a foreground tab we
-// don't want the screen saver to turn on.
-
-class MacWakeLockListener : public nsIDOMMozWakeLockListener {
-public:
-  NS_DECL_ISUPPORTS;
-
-private:
-  IOPMAssertionID mAssertionID = kIOPMNullAssertionID;
-
-  NS_IMETHOD Callback(const nsAString& aTopic, const nsAString& aState) {
-    bool isLocked = mLockedTopics.Contains(aTopic);
-    bool shouldLock = aState.EqualsLiteral("locked-foreground");
-    if (isLocked == shouldLock) {
-      return NS_OK;
-    }
-    if (shouldLock) {
-      if (!mLockedTopics.Count()) {
-        // This is the first topic to request the screen saver be disabled.
-        // Prevent screen saver.
-        CFStringRef cf_topic =
-          ::CFStringCreateWithCharacters(kCFAllocatorDefault,
-                                         reinterpret_cast<const UniChar*>
-                                           (aTopic.Data()),
-                                         aTopic.Length());
-        IOReturn success =
-          ::IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep,
-                                        kIOPMAssertionLevelOn,
-                                        cf_topic,
-                                        &mAssertionID);
-        CFRelease(cf_topic);
-        if (success != kIOReturnSuccess) {
-          NS_WARNING("fail to disable screensaver");
-        }
-      }
-      mLockedTopics.PutEntry(aTopic);
-    } else {
-      mLockedTopics.RemoveEntry(aTopic);
-      if (!mLockedTopics.Count()) {
-        // No other outstanding topics have requested screen saver be disabled.
-        // Re-enable screen saver.
-        if (mAssertionID != kIOPMNullAssertionID) {
-          IOReturn result = ::IOPMAssertionRelease(mAssertionID);
-          if (result != kIOReturnSuccess) {
-            NS_WARNING("fail to release screensaver");
-          }
-        }
-      }
-    }
-    return NS_OK;
-  }
-  // Keep track of all the topics that have requested a wake lock. When the
-  // number of topics in the hashtable reaches zero, we can uninhibit the
-  // screensaver again.
-  nsTHashtable<nsStringHashKey> mLockedTopics;
-};
-
 // defined in nsCocoaWindow.mm
 extern int32_t             gXULModalLevel;
 
@@ -205,33 +144,6 @@ nsAppShell::~nsAppShell()
   NS_OBJC_END_TRY_ABORT_BLOCK
 }
 
-NS_IMPL_ISUPPORTS(MacWakeLockListener, nsIDOMMozWakeLockListener)
-StaticRefPtr<MacWakeLockListener> sWakeLockListener;
-
-static void
-AddScreenWakeLockListener()
-{
-  nsCOMPtr<nsIPowerManagerService> sPowerManagerService = do_GetService(
-                                                          POWERMANAGERSERVICE_CONTRACTID);
-  if (sPowerManagerService) {
-    sWakeLockListener = new MacWakeLockListener();
-    sPowerManagerService->AddWakeLockListener(sWakeLockListener);
-  } else {
-    NS_WARNING("Failed to retrieve PowerManagerService, wakelocks will be broken!");
-  }
-}
-
-static void
-RemoveScreenWakeLockListener()
-{
-  nsCOMPtr<nsIPowerManagerService> sPowerManagerService = do_GetService(
-                                                          POWERMANAGERSERVICE_CONTRACTID);
-  if (sPowerManagerService) {
-    sPowerManagerService->RemoveWakeLockListener(sWakeLockListener);
-    sPowerManagerService = nullptr;
-    sWakeLockListener = nullptr;
-  }
-}
 // Init
 //
 // Loads the nib (see bug 316076c21) and sets up the CFRunLoopSource used to
@@ -640,13 +552,8 @@ nsAppShell::Run(void)
     return NS_OK;
 
   mStarted = true;
-
-  AddScreenWakeLockListener();
-
   NS_OBJC_TRY_ABORT([NSApp run]);
 
-  RemoveScreenWakeLockListener();
-
   return NS_OK;
 }