MB: Change Android Clang to build shared instead of static.
MB: Change Android Clang to build shared instead of static.

A recent build error on Android revealed that we're always doing
static builds for the Android Debug builders. This changes one
to be building shared library instead (is_component_build=true),
which should prevent such breakages in the future.

BUG=webrtc:6360
NOTRY=True

Review-Url: https://codereview.webrtc.org/2342033002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#14226}

TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc