Oilpan: Remove unused destructor from non-finalized SharedWorkerPerformance.

NOTRY=true

Review URL: https://codereview.chromium.org/209413007

git-svn-id: svn://svn.chromium.org/blink/trunk@169915 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/modules/performance/SharedWorkerPerformance.cpp

@@ -43,10 +43,6 @@ SharedWorkerPerformance::SharedWorkerPerformance()
 {
 }
 
-SharedWorkerPerformance::~SharedWorkerPerformance()
-{
-}
-
 const char* SharedWorkerPerformance::supplementName()
 {
     return "SharedWorkerPerformance";

third_party/WebKit/Source/modules/performance/SharedWorkerPerformance.h

@@ -41,7 +41,6 @@ class SharedWorker;
 class SharedWorkerPerformance FINAL : public NoBaseWillBeGarbageCollected<SharedWorkerPerformance>, public WillBeHeapSupplement<SharedWorker> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SharedWorkerPerformance);
 public:
-    virtual ~SharedWorkerPerformance();
     static SharedWorkerPerformance& from(SharedWorker&);
 
     static double workerStart(ExecutionContext*, SharedWorker&);