Concatenate string literals at compile time.

This CL was generated by running:
git ls-files | grep ".cc" | xargs perl -i -ne 'BEGIN {undef $/}; s/("[\s\n]*<<[\s\n]*")/" "/g; print;'; git cl format

After that I manually edited modules/audio_processing/gain_controller2.cc to preserve its original
formatting.

This primary benefit of this change is a small reduction in binary size.

Bug: None
Change-Id: I689fa7ba9c717c314bb167e5d592c3c4e0871e29
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/165961
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30251}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 1c88581..a0d9dd1 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -352,7 +352,8 @@
                  EnforceSplitBandHpf()),
       capture_nonlocked_() {
   RTC_LOG(LS_INFO) << "Injected APM submodules:"
-                   << "\nEcho control factory: " << !!echo_control_factory_
+                      "\nEcho control factory: "
+                   << !!echo_control_factory_
                    << "\nEcho detector: " << !!submodules_.echo_detector
                    << "\nCapture analyzer: " << !!submodules_.capture_analyzer
                    << "\nCapture post processor: "