ade9eb3c9f
Use the ChangeDetailCache to propagate updates from a PatchSetDisclosurePanel to the ChangeScreen. This decouples a PatchSetDisclosurePanel and PatchSetsBlock from having any knowledge of a ChangeScreen, making them embeddable in other components now. Since it is no longer needed, eliminate the update(ChangeDetail) method on ChangeScreen, instead the ChangeDetail should be directly updated in the ChangeDetailCache. This will provide the additional benefit of updating any other potential listeners to that cache. Change-Id: Iaa49770f6183a4847b4ec9f826f5223aec49be94