Add feature flag for phrase -> strict fallback

Bug: 281970875
Test: N/A
Change-Id: I83552b6a37c9ec67cfee1ad33a33092155c1bf80
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index fd92979b..c06459f 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -67,6 +67,11 @@
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
+cc_aconfig_library {
+    name: "aconfig_text_flags_c_lib",
+    aconfig_declarations: "com.android.text.flags-aconfig",
+}
+
 // Security
 aconfig_declarations {
     name: "android.security.flags-aconfig",
diff --git a/core/java/android/text/flags/phrase_strict_fallback.aconfig b/core/java/android/text/flags/phrase_strict_fallback.aconfig
new file mode 100644
index 0000000..c67a21b
--- /dev/null
+++ b/core/java/android/text/flags/phrase_strict_fallback.aconfig
@@ -0,0 +1,8 @@
+package: "com.android.text.flags"
+
+flag {
+  name: "phrase_strict_fallback"
+  namespace: "text"
+  description: "Feature flag for automatic fallback from phrase based line break to strict line break."
+  bug: "281970875"
+}