Bug 1423079. Remove the now-unused navigator.cpuHasSSE2 property. r=mystor

MozReview-Commit-ID: 7Zx6xvwWjXZ

dom/base/Navigator.cpp

@@ -49,7 +49,6 @@
 #include "mozilla/dom/workers/RuntimeService.h"
 #include "mozilla/Hal.h"
 #include "mozilla/ClearOnShutdown.h"
-#include "mozilla/SSE.h"
 #include "mozilla/StaticPtr.h"
 #include "Connection.h"
 #include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
@@ -722,12 +721,6 @@ Navigator::HardwareConcurrency()
   return rts->ClampedHardwareConcurrency();
 }
 
-bool
-Navigator::CpuHasSSE2()
-{
-  return mozilla::supports_sse2();
-}
-
 void
 Navigator::RefreshMIMEArray()
 {

dom/base/Navigator.h

@@ -171,7 +171,6 @@ public:
                   ErrorResult& aRv) const;
   bool JavaEnabled(CallerType aCallerType, ErrorResult& aRv);
   uint64_t HardwareConcurrency();
-  bool CpuHasSSE2();
   bool TaintEnabled()
   {
     return false;

dom/webidl/Navigator.webidl

@@ -198,12 +198,6 @@ partial interface Navigator {
    */
   [Throws, ChromeOnly]
   void removeIdleObserver(MozIdleObserver aIdleObserver);
-
-  /**
-   * Make CPU instruction subset information available for UpdateUtils.
-   */
-  [ChromeOnly]
-  readonly attribute boolean cpuHasSSE2;
 };
 
 // nsIDOMNavigatorDesktopNotification