Add bytes interface to LogEvent for pulled atoms

This adds a writeBytes interface to LogEvent for native pulled atoms,
which have been using write(string). The function still takes in a
string, but instead uses the write_char_array interface to avoid
stopping on null termination.

Test: modified tests and ran statsd_test
Test: statsd_testdrive 10055 to test against gpu app stats
Bug: 141965020
Change-Id: Iaedfb73310769165d8b61affb55e784f109355cf
diff --git a/cmds/statsd/src/logd/LogEvent.cpp b/cmds/statsd/src/logd/LogEvent.cpp
index 0ade5311..fd19c9d 100644
--- a/cmds/statsd/src/logd/LogEvent.cpp
+++ b/cmds/statsd/src/logd/LogEvent.cpp
@@ -332,6 +332,13 @@
     return false;
 }
 
+bool LogEvent::writeBytes(const string& value) {
+    if (mContext) {
+        return android_log_write_char_array(mContext, value.c_str(), value.length()) >= 0;
+    }
+    return false;
+}
+
 bool LogEvent::writeKeyValuePairs(int32_t uid,
                                   const std::map<int32_t, int32_t>& int_map,
                                   const std::map<int32_t, int64_t>& long_map,