Bug 1322964 - MozPromise clean-up - r=jwwang

Removed 'virtual' from overrides, as per coding guidelines.
Fixed some incorrect indentations, and inconsistencies.

MozReview-Commit-ID: 4kNVgoDljG3

--HG--
extra : rebase_source : 7b25abacc7cfc1a6898963bc58120204c70bee45

xpcom/threads/MozPromise.h

@@ -376,7 +376,7 @@ protected:
       mResponseTarget->Dispatch(runnable.forget(), AbstractThread::DontAssertDispatchSuccess);
     }
 
-    virtual void Disconnect() override
+    void Disconnect() override
     {
       MOZ_ASSERT(ThenValueBase::mResponseTarget->IsCurrentThreadIn());
       MOZ_DIAGNOSTIC_ASSERT(!Request::mComplete);
@@ -486,7 +486,7 @@ protected:
       , mResolveMethod(aResolveMethod)
       , mRejectMethod(aRejectMethod) {}
 
-  virtual void Disconnect() override
+    void Disconnect() override
     {
       ThenValueBase::Disconnect();
 
@@ -497,7 +497,7 @@ protected:
     }
 
   protected:
-    virtual already_AddRefed<MozPromise> DoResolveOrRejectInternal(const ResolveOrRejectValue& aValue) override
+    already_AddRefed<MozPromise> DoResolveOrRejectInternal(const ResolveOrRejectValue& aValue) override
     {
       RefPtr<MozPromise> completion;
       if (aValue.IsResolve()) {
@@ -536,7 +536,7 @@ protected:
       mRejectFunction.emplace(Move(aRejectFunction));
     }
 
-  virtual void Disconnect() override
+    void Disconnect() override
     {
       ThenValueBase::Disconnect();
 
@@ -549,7 +549,7 @@ protected:
     }
 
   protected:
-    virtual already_AddRefed<MozPromise> DoResolveOrRejectInternal(const ResolveOrRejectValue& aValue) override
+    already_AddRefed<MozPromise> DoResolveOrRejectInternal(const ResolveOrRejectValue& aValue) override
     {
       // Note: The usage of InvokeCallbackMethod here requires that
       // ResolveFunction/RejectFunction are capture-lambdas (i.e. anonymous