Add loading animations to conversation view

fixes b/6272925 jank - conversation loading isn't animated
fixes b/7131797 Blank scren shown for live conversation, when in airplane mode
Note: need to do a next cl that puts off showing the spinner
until at least XXX ms have passed
Also, we cant use the software layer for rendering like we did
in gmail1
it looks like there is a skia crash that triggers when we try
to use software / switch to hardware rendering for the browser
need to investigate that more

Change-Id: I96a30b700c3e88d52e603fe2f11b44d113e013d2

1 files changed, 4 insertions, 0 deletions

diff --git a/proguard.flags b/proguard.flags
index 6bc0847d2..1434eff1f 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -48,6 +48,10 @@
   *** setAnimatedHeight(...);
 }
 
+-keepclasseswithmembers class com.android.mail.ui.LeaveBehindItem {
+  *** setAnimatedHeight(...);
+}
+
 -keepclasseswithmembers class com.android.mail.ui.ConversationViewFragment$MailJsBridge {
   public <methods>;
 }