Fix newlines at end of files.

Make sure every .h and .cc file in //net ends in exactly one newline
character.

Change-Id: I5c7777055705e6a881b37f8f8386880dd810e9fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1576437Reviewed-by: Paul Jensen <pauljensen@chromium.org>
Commit-Queue: Bence Béky <bnc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652843}

net/android/android_http_util.cc

@@ -26,4 +26,3 @@ jboolean JNI_HttpUtil_IsAllowedHeader(
 }
 
 }  // namespace net
-