Merge "Update Material icons and backgrounds" into lmp-dev

.../res/drawable-hdpi/ic_emoji_people_activated_lxx_dark.png

...res/drawable-hdpi/ic_emoji_people_activated_lxx_light.png

java/res/drawable-hdpi/ic_emoji_people_normal_lxx_dark.png

java/res/drawable-hdpi/ic_emoji_people_normal_lxx_light.png

.../res/drawable-hdpi/ic_emoji_places_activated_lxx_dark.png

...res/drawable-hdpi/ic_emoji_places_activated_lxx_light.png

java/res/drawable-hdpi/ic_emoji_places_normal_lxx_dark.png

java/res/drawable-hdpi/ic_emoji_places_normal_lxx_light.png

...res/drawable-hdpi/ic_emoji_recents_activated_lxx_dark.png

...es/drawable-hdpi/ic_emoji_recents_activated_lxx_light.png

java/res/drawable-hdpi/ic_emoji_recents_normal_lxx_dark.png

java/res/drawable-hdpi/ic_emoji_recents_normal_lxx_light.png

java/res/drawable-hdpi/keyboard_background_lxx_dark.9.png

java/res/drawable-hdpi/keyboard_background_lxx_light.9.png

java/res/drawable-hdpi/keyboard_suggest_strip_lxx_dark.9.png

.../res/drawable-hdpi/keyboard_suggest_strip_lxx_light.9.png

java/res/drawable-hdpi/sym_keyboard_space_lxx_dark.png

java/res/drawable-hdpi/sym_keyboard_space_lxx_light.png

.../res/drawable-mdpi/ic_emoji_people_activated_lxx_dark.png

...res/drawable-mdpi/ic_emoji_people_activated_lxx_light.png