Bug 944257 - Fix warning by removing unused ContentClientBasic member variable mManager. r=gal

gfx/layers/basic/BasicThebesLayer.cpp

@@ -156,9 +156,9 @@ BasicThebesLayer::Validate(LayerManager::DrawThebesLayerCallback aCallback,
                            void* aCallbackData)
 {
   if (!mContentClient) {
-    // we pass a null pointer for the Forwarder argument, which means
-    // this will not have a ContentHost on the other side.
-    mContentClient = new ContentClientBasic(nullptr, BasicManager());
+    // This client will have a null Forwarder, which means it will not have
+    // a ContentHost on the other side.
+    mContentClient = new ContentClientBasic();
   }
 
   if (!BasicManager()->IsRetained()) {

gfx/layers/client/ContentClient.cpp

@@ -73,11 +73,11 @@ ContentClient::CreateContentClient(CompositableForwarder* aForwarder)
 
 }
 
-ContentClientBasic::ContentClientBasic(CompositableForwarder* aForwarder,
-                                       BasicLayerManager* aManager)
-  : ContentClient(aForwarder)
+// We pass a null pointer for the ContentClient Forwarder argument, which means
+// this client will not have a ContentHost on the other side.
+ContentClientBasic::ContentClientBasic()
+  : ContentClient(nullptr)
   , RotatedContentBuffer(ContainsVisibleBounds)
-  , mManager(aManager)
 {}
 
 void

gfx/layers/client/ContentClient.h

@@ -134,8 +134,7 @@ class ContentClientBasic : public ContentClient
                          , protected RotatedContentBuffer
 {
 public:
-  ContentClientBasic(CompositableForwarder* aForwarder,
-                     BasicLayerManager* aManager);
+  ContentClientBasic();
 
   typedef RotatedContentBuffer::PaintState PaintState;
   typedef RotatedContentBuffer::ContentType ContentType;
@@ -162,9 +161,6 @@ public:
   }
 
   virtual void OnActorDestroy() MOZ_OVERRIDE {}
-
-private:
-  BasicLayerManager* mManager;
 };
 
 /**