Fixing WebView ProGuard config for annotations

android_webview/apk/java/proguard.flags

Index: android_webview/apk/java/proguard.flags
diff --git a/android_webview/apk/java/proguard.flags b/android_webview/apk/java/proguard.flags
index 3b3f2c6332c785919eb2762e8f1b48b528df1f42..9d3af7071750cc97654b1581ad2a69db571f9022 100644
--- a/android_webview/apk/java/proguard.flags
+++ b/android_webview/apk/java/proguard.flags
@@ -8,10 +8,9 @@
 
 # Keep all runtime visible annotations.
 -keepattributes RuntimeVisibleAnnotations
-
-# Disable optimization as this causes proguard to remove seemingly random stuff,
-# including things explicitly kept in this configuration.
--dontoptimize
+-keep @interface **.AccessedBy*

[agrieve, 2016/07/13 13:42:29]

nit: Can you add a comment warning that removing them causes the below -keeps to
not work.

+-keep @interface **.CalledBy*
+-keep @interface **.UsedBy*
 
 # Keep the factory and its public members; it's the main entry point used by the
 # framework.
@@ -39,7 +38,10 @@
   native <methods>;
 }
 
-# Keep things explicitly marked as used by reflection
+# Keep classes marked as used by reflection
+-keep @**.UsedByReflection class *
+
+# Keep members explicitly marked as used by reflection
 -keepclasseswithmembers class com.android.webview.chromium.**,org.chromium.** {
   @**.UsedByReflection *;
 }