LogEntry: Change JSON field names to match Google documentation.

Change-Id: I007fd1f7164d2572c49da170945d435a22319b54
diff --git a/.gitignore b/.gitignore
index 0390997..a7f8234 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/.gradle
 /.idea
 
 build/