update_engine: Update libchrome APIs to r369476

The new libchrome has been ported from Chromium and some APIs have
changed. Make necessary changes at call sites.

(cherry picked from commit 0103c36caa2e38e034e0d22185736b9ccfb35c58)

Change-Id: I3dedd8b3f6e92ce8d3eeef99a76ad876c29db304
diff --git a/omaha_request_action.cc b/omaha_request_action.cc
index f2cd032..1b0c2fe 100644
--- a/omaha_request_action.cc
+++ b/omaha_request_action.cc
@@ -418,7 +418,8 @@
 
   const string path_suffix = string("/") + element;
 
-  if (!base::EndsWith(data->current_path, path_suffix, true)) {
+  if (!base::EndsWith(data->current_path, path_suffix,
+                      base::CompareCase::SENSITIVE)) {
     LOG(ERROR) << "Unexpected end element '" << element
                << "' with current_path='" << data->current_path << "'";
     data->failed = true;