android: remove duplicate progress bar declaration

Change-Id: Ie0a463bf5f006ce5d340e085bd6962b728d29c35
android: add tileSize parameter to TileProvider

Change-Id: I607dbaa897b17f5b650f10293956c8154da6f43d
android: remove some unneeded logging in GeckoLayerClient

Change-Id: Ib53aae87e7fa510c3783a86a7512c25548457fd4
android: replace MultiTileLayer with new & simpler DynamicTileLayer

Change-Id: Idec2246975a65f8ce664642a4ef49415e20ca187
android: SingleTileLayer - less var. trashing (Fennec update)

Change-Id: I8c32f6a43cad6dd3790a3e7dd0b990516a35ebca
android: SubTile - equals and hash

Change-Id: I6e8cf220d108cefdf16f9b4553e2d2ecd7a5338c
android: image in TileLayer can be null

Change-Id: I4a910eb60f6fe81f97933d1b9e57bac6af4547c9