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}
diff --git a/rtc_base/unixfilesystem.cc b/rtc_base/unixfilesystem.cc
index a48aca1..023c34c 100644
--- a/rtc_base/unixfilesystem.cc
+++ b/rtc_base/unixfilesystem.cc
@@ -57,7 +57,7 @@
 
 UnixFilesystem::~UnixFilesystem() {}
 
-bool UnixFilesystem::DeleteFile(const Pathname &filename) {
+bool UnixFilesystem::DeleteFile(const Pathname& filename) {
   RTC_LOG(LS_INFO) << "Deleting file:" << filename.pathname();
 
   if (!IsFile(filename)) {
@@ -67,8 +67,8 @@
   return ::unlink(filename.pathname().c_str()) == 0;
 }
 
-bool UnixFilesystem::MoveFile(const Pathname &old_path,
-                              const Pathname &new_path) {
+bool UnixFilesystem::MoveFile(const Pathname& old_path,
+                              const Pathname& new_path) {
   if (!IsFile(old_path)) {
     RTC_DCHECK(IsFile(old_path));
     return false;
@@ -81,7 +81,7 @@
   return true;
 }
 
-bool UnixFilesystem::IsFolder(const Pathname &path) {
+bool UnixFilesystem::IsFolder(const Pathname& path) {
   struct stat st;
   if (stat(path.pathname().c_str(), &st) < 0)
     return false;
@@ -95,7 +95,7 @@
   return res == 0 && !S_ISDIR(st.st_mode);
 }
 
-bool UnixFilesystem::GetFileSize(const Pathname& pathname, size_t *size) {
+bool UnixFilesystem::GetFileSize(const Pathname& pathname, size_t* size) {
   struct stat st;
   if (::stat(pathname.pathname().c_str(), &st) != 0)
     return false;