WebViewClassic: Add freeMemoryForTests

Since the 4.4.3 merge, an override of freeMemoryForTests is required to build

Change-Id: I81c13f4d4f39332ccce3616881ec6e84605ef0ee
hwui: add capability to skip fence sync

Enable via: TARGET_DOESNT_USE_FENCE_SYNC := true

Change-Id: I51901b47433a57e4184934a0e342c6641862193f
GLSurfaceView: support RGB_888 surface transformation to RGBA_8888

Allows transformation of RGB_888 surfaces to RGBA_8888,as an
alternative to forcing RGB565. Useful for avoiding crashes in
certain apps on Broadcom VideoCore graphics.

Enable via property ro.opengles.surface.rgba8888=true.

Change-Id: Iaaa3fdc0a2efd898569b2415adadb1e69c83d20e