Findbugs: Ignore all genereted Manifest classes.

build/android/findbugs_filter/findbugs_exclude.xml

Index: build/android/findbugs_filter/findbugs_exclude.xml
diff --git a/build/android/findbugs_filter/findbugs_exclude.xml b/build/android/findbugs_filter/findbugs_exclude.xml
index dbff9d9667fed37fc295c175aab79170b8c58f11..320a2bf352f9d9e192943d634e938eb16081d24e 100644
--- a/build/android/findbugs_filter/findbugs_exclude.xml
+++ b/build/android/findbugs_filter/findbugs_exclude.xml
@@ -14,8 +14,9 @@ In particular, ~ at the start of a string means it's a regex.
   <Match>
     <Class name="~.*\.R(\$\w+)?" />
   </Match>
+  <!-- Skip the generated Manifest class (including nested classes). -->
   <Match>
-    <Class name="~org\.chromium\..*\.Manifest(\$\w+)?" />
+    <Class name="~.*\.Manifest(\$\w+)?" />
   </Match>
   <Bug pattern="DM_STRING_CTOR" />
   <!-- Ignore "reliance on default String encoding" warnings, as we're not multi-platform -->