Bug 950113 - Avoid destroying our texture everytime we composite a ImageHost - r=nical

gfx/layers/composite/ImageHost.cpp

@@ -38,12 +38,6 @@ ImageHost::~ImageHost() {}
 void
 ImageHost::UseTextureHost(TextureHost* aTexture)
 {
-  if (mFrontBuffer) {
-    // XXX - When we implement sharing textures between several compositables
-    // we will need to not remove the compositor if there is another compositable
-    // using the texture.
-    mFrontBuffer->SetCompositor(nullptr);
-  }
   CompositableHost::UseTextureHost(aTexture);
   mFrontBuffer = aTexture;
 }