Switch to protobuf lite

Fixes: 36272398

Protobuf lite isn't just smaller, it also doesn't
have the problematic DescriptorPool at all. So no
need to switch this to a shared library.

Test: hwui_unit_test passes and doesn't crash. CTS incident tests pass
as well

Change-Id: I2693ba2c47af89a5c561c4f63cc7e1f509ebbbec
diff --git a/libs/hwui/tests/unit/FontRendererTests.cpp b/libs/hwui/tests/unit/FontRendererTests.cpp
index 773a7ea..ee20236 100644
--- a/libs/hwui/tests/unit/FontRendererTests.cpp
+++ b/libs/hwui/tests/unit/FontRendererTests.cpp
@@ -28,7 +28,7 @@
     return true;
 }
 
-RENDERTHREAD_OPENGL_PIPELINE_TEST(FontRenderer, DISABLED_renderDropShadow) {
+RENDERTHREAD_OPENGL_PIPELINE_TEST(FontRenderer, renderDropShadow) {
     SkPaint paint;
     paint.setTextSize(10);
     paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);