Remove some FIXMEs from Push code

third_party/WebKit/Source/modules/push_messaging/PushManager.cpp

Index: third_party/WebKit/Source/modules/push_messaging/PushManager.cpp
diff --git a/third_party/WebKit/Source/modules/push_messaging/PushManager.cpp b/third_party/WebKit/Source/modules/push_messaging/PushManager.cpp
index a2f55f622639ce80223dcd78c00a71872590ac0c..3e10f1b08522b944cbf65a9cb57fa7ff48eb20aa 100644
--- a/third_party/WebKit/Source/modules/push_messaging/PushManager.cpp
+++ b/third_party/WebKit/Source/modules/push_messaging/PushManager.cpp
@@ -63,7 +63,6 @@ ScriptPromise PushManager::subscribe(ScriptState* scriptState, const PushSubscri
     // different contexts can succeed.
     if (scriptState->executionContext()->isDocument()) {
         Document* document = toDocument(scriptState->executionContext());
-        // FIXME: add test coverage for this condition - https://crbug.com/440431
         if (!document->domWindow() || !document->frame())
             return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidStateError, "Document is detached from window."));
         PushController::clientFrom(document->frame()).subscribe(m_registration->webRegistration(), toWebPushSubscriptionOptions(options), new PushSubscriptionCallbacks(resolver, m_registration));
@@ -87,7 +86,6 @@ ScriptPromise PushManager::permissionState(ScriptState* scriptState, const PushS
 {
     if (scriptState->executionContext()->isDocument()) {
         Document* document = toDocument(scriptState->executionContext());
-        // FIXME: add test coverage for this condition - https://crbug.com/440431
         if (!document->domWindow() || !document->frame())
             return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidStateError, "Document is detached from window."));
     }