update_engine: fixed warnings from cpplint

Fixed all the cpplint warnings in update engine.

BUG=None
TEST=Unit tests still pass.

Change-Id: I285ae858eec8abe0b26ff203b99a42a200ceb71c
Reviewed-on: https://chromium-review.googlesource.com/204027
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/omaha_request_params.cc b/omaha_request_params.cc
index 667ed46..73117a4 100644
--- a/omaha_request_params.cc
+++ b/omaha_request_params.cc
@@ -114,14 +114,14 @@
 }
 
 bool OmahaRequestParams::CollectECFWVersions() const {
-  return (
+  return {
       StartsWithASCII(hwid_, string("SAMS ALEX"), true) ||
       StartsWithASCII(hwid_, string("BUTTERFLY"), true) ||
       StartsWithASCII(hwid_, string("LUMPY"), true) ||
       StartsWithASCII(hwid_, string("PARROT"), true) ||
       StartsWithASCII(hwid_, string("SPRING"), true) ||
       StartsWithASCII(hwid_, string("SNOW"), true)
-  );
+  };
 }
 
 bool OmahaRequestParams::SetTargetChannel(const std::string& new_target_channel,
@@ -179,8 +179,8 @@
   string is_powerwash_allowed_str = GetLsbValue(
       kIsPowerwashAllowedKey,
       "false",
-      NULL, // no need to validate
-      true); // always get it from stateful, as that's the only place it'll be
+      NULL,   // no need to validate
+      true);  // always get it from stateful, as that's the only place it'll be
   bool is_powerwash_allowed_new_value = (is_powerwash_allowed_str == "true");
   if (is_powerwash_allowed_ != is_powerwash_allowed_new_value) {
     is_powerwash_allowed_ = is_powerwash_allowed_new_value;