update engine: clang formatting

Fix clang formatting issues for all .cc, .h, and .proto files
in update engine.

~/trunk/src/chromium/src/buildtools/linux64/clang-format -i \
-style=file $(find update_engine -name '*.h' -o -name '*.cc' \
-o -name '*.cpp' -o -name '*.c')

BUG=b:169679497
TEST=CQ pass

Change-Id: I4fde01d3e734dbffaa2c7e7b667503d310abccae
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2462840
Reviewed-by: Amin Hassani <[email protected]>
Reviewed-by: Jae Hoon Kim <[email protected]>
Tested-by: Vyshu Khota <[email protected]>
Commit-Queue: Vyshu Khota <[email protected]>
diff --git a/test_http_server.cc b/test_http_server.cc
index cf6f10d..a2f1e05 100644
--- a/test_http_server.cc
+++ b/test_http_server.cc
@@ -190,7 +190,7 @@
                     string("HTTP/1.1 ") + Itoa(return_code) + " " +
                         GetHttpResponseDescription(return_code) +
                         EOL "Content-Type: application/octet-stream" EOL
-                        "Connection: close" EOL);
+                            "Connection: close" EOL);
   if (ret < 0)
     return -1;
   written += ret;