(5) Rename files to snake_case: install forwarding headers

Mechanically generated with this command:

tools_webrtc/do-renames.sh install all-renames.txt && git cl format

Bug: webrtc:10159
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Ic8e99f71f2da62e5c99863c6d24a8cfe311466cd
Reviewed-on: https://webrtc-review.googlesource.com/c/115682
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26227}
diff --git a/examples/androidnativeapi/BUILD.gn b/examples/androidnativeapi/BUILD.gn
index 2d0438b..22f70c1 100644
--- a/examples/androidnativeapi/BUILD.gn
+++ b/examples/androidnativeapi/BUILD.gn
@@ -39,6 +39,7 @@
     sources = [
       "jni/android_call_client.cc",
       "jni/android_call_client.h",
+      "jni/androidcallclient.h",
       "jni/onload.cc",
     ]