Port Pico to new TTS engine API

Requires TTS engine API added in
change I7614ff788e11f897e87052f684f1b4938d539fb7

The compatibility layer in

pico/compat/src/com/android/tts/compat/SynthProxy.java
pico/compat/jni/com_android_tts_compat_SynthProxy.cpp

is based on these files removed from the old TTS engine framework:

frameworks/base/packages/TtsService/src/android/tts/SynthProxy.java
frameworks/base/packages/TtsService/jni/android_tts_SynthProxy.cpp

Bug: 4150618
Change-Id: I7a2cca6b5cfbac6158a87fad69cc796140adb2f3
11 files changed