Added a debug info UI for Blimp

blimp/client/app/android/blimp_client_session_android.cc

Index: blimp/client/app/android/blimp_client_session_android.cc
diff --git a/blimp/client/app/android/blimp_client_session_android.cc b/blimp/client/app/android/blimp_client_session_android.cc
index 88044493f3cedd1cd6d89c77757371f059712be6..bbe7841b56f43070df520558201983a59f039704 100644
--- a/blimp/client/app/android/blimp_client_session_android.cc
+++ b/blimp/client/app/android/blimp_client_session_android.cc
@@ -93,6 +93,14 @@ void BlimpClientSessionAndroid::OnDisconnected(int result) {
           env, net::ErrorToShortString(result)).obj());
 }
 
+void BlimpClientSessionAndroid::UpdateDebugInfo(int received,
+                                                int sent,
+                                                int commits) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_BlimpClientSession_updateDebugInfo(env, java_obj_.obj(), received, sent,
+                                          commits);
+}
+
 void BlimpClientSessionAndroid::Destroy(JNIEnv* env,
                                         const JavaParamRef<jobject>& jobj) {
   delete this;
@@ -113,5 +121,12 @@ void BlimpClientSessionAndroid::OnAssignmentConnectionAttempted(
   BlimpClientSession::OnAssignmentConnectionAttempted(result, assignment);
 }
 
+void BlimpClientSessionAndroid::EnableDebugInfo(

[Khushal, 2016/05/18 00:23:00]

Hmmm, I don't think we really need to explicitly disable stats collection if the
user hides the debug view. The data can still be recorded and will be visible
when the user shows the view. You can just avoid piping the updates to java if
the view is not showing.

If you want to give the user an explicit option to reset the stats, then you can
add that in the menu.

[Khushal, 2016/05/18 20:41:10]

Ignore this part of the comment, I thought you were disabling stats collection.
Might want to rename this as EnableDebugInfoUpdates.

[shaktisahu, 2016/05/19 21:39:18]

I am not disabling the stat collection. The stats are collected but anyway, but
not sent to UI, if it is disabled. May be the name is causing confusion??

+    JNIEnv* env,
+    const base::android::JavaParamRef<jobject>& jobj,
+    jboolean enable) {
+  BlimpClientSession::EnableDebugInfo(enable);
+}
+
 }  // namespace client
 }  // namespace blimp