Obfuscation on for chromium code

chrome/android/java/proguard.flags

Index: chrome/android/java/proguard.flags
diff --git a/chrome/android/java/proguard.flags b/chrome/android/java/proguard.flags
index cf546d1ba7ebc350d2eac18eebae58716d6d46b8..f20bbae4cdad90181a8e1f7ad45c3c64d05f589d 100644
--- a/chrome/android/java/proguard.flags
+++ b/chrome/android/java/proguard.flags
@@ -1,7 +1,6 @@
-# Disable obfuscation for the following two packages.
--keepnames,allowoptimization class com.google.android.apps.chrome.**,org.chromium.** {
-  *;
-}
+-renamesourcefileattribute PG
+
+-repackageclasses ""
 
 # Fragments are loaded using reflection via Fragment.instantiate(Context,String)
 # This can be improved upon - see crbug.com/622023.
@@ -24,6 +23,13 @@
   *;
 }
 
+# These classes aren't themselves referenced, but __ProcessService[0,1,2...] are
+# referenced, and we look up these services by appending a number onto the name
+# of the base class. Thus, we need to keep the base class name around so that
+# the child classes can be looked up.
+-keep class org.chromium.content.app.SandboxedProcessService
+-keep class org.chromium.content.app.PrivilegedProcessService
+
 # Keep all Parcelables as they might be marshalled outside Chrome.
 -keepnames class * implements android.os.Parcelable {
    public static final ** CREATOR;