Reformat the WebRTC code base

Running clang-format with chromium's style guide.

The goal is n-fold:
 * providing consistency and readability (that's what code guidelines are for)
 * preventing noise with presubmit checks and git cl format
 * building on the previous point: making it easier to automatically fix format issues
 * you name it

Please consider using git-hyper-blame to ignore this commit.

Bug: webrtc:9340
Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87
Reviewed-on: https://webrtc-review.googlesource.com/81185
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23660}

rtc_base/string_to_number.h

@@ -11,8 +11,8 @@
 #ifndef RTC_BASE_STRING_TO_NUMBER_H_
 #define RTC_BASE_STRING_TO_NUMBER_H_
 
-#include <string>
 #include <limits>
+#include <string>
 
 #include "api/optional.h"
 
@@ -44,7 +44,7 @@ namespace rtc {
 namespace string_to_number_internal {
 // These must be (unsigned) long long, to match the signature of strto(u)ll.
 using unsigned_type = unsigned long long;  // NOLINT(runtime/int)
-using signed_type = long long;  // NOLINT(runtime/int)
+using signed_type = long long;             // NOLINT(runtime/int)
 
 rtc::Optional<signed_type> ParseSigned(const char* str, int base);
 rtc::Optional<unsigned_type> ParseUnsigned(const char* str, int base);