Bug 869411 - Part 1: Move toolbar to gecko_app layout. r=sriram
Bug 869411 - Part 2: Replace getPadding() with getTopPadding() in AboutHome. r=lucasr
Bug 869411 - Part 3: Set AboutHome padding in setDynamicToolbarEnabled() instead of refreshToolbarHeight(). r=Cwiiis
Bug 869411 - Part 4: Save top padding state in AboutHome. r=lucasr