2 files changed, 5 insertions, 26 deletions
diff --git a/toolkit/xre/nsAppRunner.cpp b/toolkit/xre/nsAppRunner.cpp
index 4979e1652..4a1d3046f 100644
--- a/toolkit/xre/nsAppRunner.cpp
+++ b/toolkit/xre/nsAppRunner.cpp
@@ -98,7 +98,6 @@
 #include <intrin.h>
 #include <math.h>
 #include "cairo/cairo-features.h"
-#include "mozilla/WindowsVersion.h"
 #include "mozilla/mscom/MainThreadRuntime.h"
 #include "mozilla/widget/AudioSession.h"
 
@@ -3106,10 +3105,7 @@ XREMain::XRE_mainInit(bool* aExitFlag)
     // manual font file I/O on _all_ system fonts.  To avoid this, load the
     // dwrite library and create a factory as early as possible so that the
     // FntCache service is ready by the time it's needed.
-
-    if (IsVistaOrLater()) {
-      CreateThread(nullptr, 0, &InitDwriteBG, nullptr, 0, nullptr);
-    }
+    CreateThread(nullptr, 0, &InitDwriteBG, nullptr, 0, nullptr);
   }
 #endif
 
@@ -4835,7 +4831,7 @@ enum {
   kE10sDisabledForAddons = 7,
   kE10sForceDisabled = 8,
   // kE10sDisabledForXPAcceleration = 9, removed in bug 1296353
-  kE10sDisabledForOperatingSystem = 10,
+  // kE10sDisabledForOperatingSystem = 10, removed due to xp-eol
 };
 
 const char* kAccessibilityLastRunDatePref = "accessibility.lastLoadDate";
@@ -4912,19 +4908,6 @@ MultiprocessBlockPolicy() {
   }
 #endif
 
-  /**
-   * Avoids enabling e10s for Windows XP users on the release channel.
-   */
-#if defined(XP_WIN)
-  if (!IsVistaOrLater()) {
-    nsAdoptingCString channelName = Preferences::GetDefaultCString("app.update.channel");
-    if (channelName.EqualsLiteral("release") || channelName.EqualsLiteral("esr")) {
-      gMultiprocessBlockPolicy = kE10sDisabledForOperatingSystem;
-      return gMultiprocessBlockPolicy;
-    }
-  }
-#endif // XP_WIN
-
   /*
    * None of the blocking policies matched, so e10s is allowed to run.
    * Cache the information and return 0, indicating success.
diff --git a/toolkit/xre/nsXREDirProvider.cpp b/toolkit/xre/nsXREDirProvider.cpp
index 2fbd324b7..09168319f 100644
--- a/toolkit/xre/nsXREDirProvider.cpp
+++ b/toolkit/xre/nsXREDirProvider.cpp
@@ -48,7 +48,6 @@
 #ifdef XP_WIN
 #include <windows.h>
 #include <shlobj.h>
-#include "mozilla/WindowsVersion.h"
 #endif
 #ifdef XP_MACOSX
 #include "nsILocalFileMac.h"
@@ -762,15 +761,12 @@ nsXREDirProvider::LoadContentProcessTempDir()
 static bool
 IsContentSandboxDisabled()
 {
+  bool isSandboxDisabled = false;
   if (!BrowserTabsRemoteAutostart()) {
     return false;
   }
-#if defined(XP_WIN)
-  const bool isSandboxDisabled = !mozilla::IsVistaOrLater() ||
-    (Preferences::GetInt("security.sandbox.content.level") < 1);
-#elif defined(XP_MACOSX)
-  const bool isSandboxDisabled =
-    Preferences::GetInt("security.sandbox.content.level") < 1;
+#if defined(XP_WIN) || defined(XP_MACOSX)
+  isSandboxDisabled = Preferences::GetInt("security.sandbox.content.level") < 1;
 #endif
   return isSandboxDisabled;
 }