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/pathutils.h

@@ -38,7 +38,7 @@ namespace rtc {
 ///////////////////////////////////////////////////////////////////////////////
 
 class Pathname {
-public:
+ public:
   // Folder delimiters are slash and backslash
   static bool IsFolderDelimiter(char ch);
   static char DefaultFolderDelimiter();
@@ -71,11 +71,11 @@ public:
   std::string filename() const;
   bool SetFilename(const std::string& filename);
 
-private:
+ private:
   std::string folder_, basename_, extension_;
   char folder_delimiter_;
 };
 
 }  // namespace rtc
 
-#endif // RTC_BASE_PATHUTILS_H_
+#endif  // RTC_BASE_PATHUTILS_H_