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/asyncinvoker-inl.h

@@ -48,12 +48,10 @@ class AsyncClosure {
 template <class FunctorT>
 class FireAndForgetAsyncClosure : public AsyncClosure {
  public:
-  explicit FireAndForgetAsyncClosure(AsyncInvoker* invoker,
-                                     FunctorT&& functor)
+  explicit FireAndForgetAsyncClosure(AsyncInvoker* invoker, FunctorT&& functor)
       : AsyncClosure(invoker), functor_(std::forward<FunctorT>(functor)) {}
-  virtual void Execute() {
-    functor_();
-  }
+  virtual void Execute() { functor_(); }
+
  private:
   typename std::decay<FunctorT>::type functor_;
 };