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_tools/event_log_visualizer/plot_protobuf.cc

@@ -69,8 +69,8 @@ void ProtobufPlotCollection::ExportProtobuf(
     // TODO(terelius): Ensure that there is no way to insert plots other than
     // ProtobufPlots in a ProtobufPlotCollection. Needed to safely static_cast
     // here.
-    webrtc::analytics::Chart* protobuf_representation
-        = collection->add_charts();
+    webrtc::analytics::Chart* protobuf_representation =
+        collection->add_charts();
     static_cast<ProtobufPlot*>(plot.get())
         ->ExportProtobuf(protobuf_representation);
   }