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/video_coding/codecs/h264/h264_encoder_impl.cc b/modules/video_coding/codecs/h264/h264_encoder_impl.cc
index 24fd7a8..53fac77 100644
--- a/modules/video_coding/codecs/h264/h264_encoder_impl.cc
+++ b/modules/video_coding/codecs/h264/h264_encoder_impl.cc
@@ -378,7 +378,7 @@
   if (!encoded_image_callback_) {
     RTC_LOG(LS_WARNING)
         << "InitEncode() has been called, but a callback function "
-        << "has not been set with RegisterEncodeCompleteCallback()";
+           "has not been set with RegisterEncodeCompleteCallback()";
     ReportError();
     return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
   }
diff --git a/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc b/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
index 4e47507..551ace2 100644
--- a/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
+++ b/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.cc
@@ -72,9 +72,11 @@
       allocated_buffers_.push_back(available_buffer);
       if (allocated_buffers_.size() > max_num_buffers_) {
         RTC_LOG(LS_WARNING)
-            << allocated_buffers_.size() << " Vp9FrameBuffers have been "
-            << "allocated by a Vp9FrameBufferPool (exceeding what is "
-            << "considered reasonable, " << max_num_buffers_ << ").";
+            << allocated_buffers_.size()
+            << " Vp9FrameBuffers have been "
+               "allocated by a Vp9FrameBufferPool (exceeding what is "
+               "considered reasonable, "
+            << max_num_buffers_ << ").";
 
         // TODO(phoglund): this limit is being hit in tests since Oct 5 2016.
         // See https://bugs.chromium.org/p/webrtc/issues/detail?id=6484.
diff --git a/modules/video_coding/codecs/vp9/vp9_impl.cc b/modules/video_coding/codecs/vp9/vp9_impl.cc
index 06b7fe1..df53cda 100644
--- a/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -1032,7 +1032,8 @@
   if (rv != VPX_CODEC_OK) {
     RTC_LOG(LS_ERROR) << "Encoding error: " << vpx_codec_err_to_string(rv)
                       << "\n"
-                      << "Details: " << vpx_codec_error(encoder_) << "\n"
+                         "Details: "
+                      << vpx_codec_error(encoder_) << "\n"
                       << vpx_codec_error_detail(encoder_);
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
@@ -1608,8 +1609,9 @@
     // The frame buffers are reference counted and frames are exposed after
     // decoding. There may be valid usage cases where previous frames are still
     // referenced after ~VP9DecoderImpl that is not a leak.
-    RTC_LOG(LS_INFO) << num_buffers_in_use << " Vp9FrameBuffers are still "
-                     << "referenced during ~VP9DecoderImpl.";
+    RTC_LOG(LS_INFO) << num_buffers_in_use
+                     << " Vp9FrameBuffers are still "
+                        "referenced during ~VP9DecoderImpl.";
   }
 }
 
diff --git a/modules/video_coding/decoding_state.cc b/modules/video_coding/decoding_state.cc
index f769ed0..a951358 100644
--- a/modules/video_coding/decoding_state.cc
+++ b/modules/video_coding/decoding_state.cc
@@ -297,7 +297,7 @@
       frame->CodecSpecific()->codecSpecific.VP9.flexible_mode;
   if (is_flexible_mode && frame->PictureId() == kNoPictureId) {
     RTC_LOG(LS_WARNING) << "Frame is marked as using flexible mode but no"
-                        << "picture id is set.";
+                           "picture id is set.";
     return false;
   }
   return is_flexible_mode;
diff --git a/modules/video_coding/frame_buffer2.cc b/modules/video_coding/frame_buffer2.cc
index f76b957..1074215 100644
--- a/modules/video_coding/frame_buffer2.cc
+++ b/modules/video_coding/frame_buffer2.cc
@@ -350,7 +350,8 @@
     int frame_delay = static_cast<int>(std::abs(render_time_ms - now_ms));
     RTC_LOG(LS_WARNING)
         << "A frame about to be decoded is out of the configured "
-        << "delay bounds (" << frame_delay << " > " << kMaxVideoDelayMs
+           "delay bounds ("
+        << frame_delay << " > " << kMaxVideoDelayMs
         << "). Resetting the video jitter buffer.";
     return true;
   }
@@ -482,14 +483,14 @@
                           << id.picture_id << ":"
                           << static_cast<int>(id.spatial_layer)
                           << ") but buffer is full, clearing"
-                          << " buffer and inserting the frame.";
+                             " buffer and inserting the frame.";
       ClearFramesAndHistory();
     } else {
       RTC_LOG(LS_WARNING) << "Frame with (picture_id:spatial_id) ("
                           << id.picture_id << ":"
                           << static_cast<int>(id.spatial_layer)
                           << ") could not be inserted due to the frame "
-                          << "buffer being full, dropping frame.";
+                             "buffer being full, dropping frame.";
       return last_continuous_picture_id;
     }
   }
@@ -662,7 +663,7 @@
               << "Frame with (picture_id:spatial_id) (" << id.picture_id << ":"
               << static_cast<int>(id.spatial_layer)
               << ") depends on a non-decoded frame more previous than"
-              << " the last decoded frame, dropping frame.";
+                 " the last decoded frame, dropping frame.";
           last_log_non_decoded_ms_ = now_ms;
         }
         return false;
diff --git a/modules/video_coding/packet_buffer.cc b/modules/video_coding/packet_buffer.cc
index fb25c0a..0fbd042 100644
--- a/modules/video_coding/packet_buffer.cc
+++ b/modules/video_coding/packet_buffer.cc
@@ -357,8 +357,8 @@
         if (has_h264_idr && (!has_h264_sps || !has_h264_pps)) {
           RTC_LOG(LS_WARNING)
               << "Received H.264-IDR frame "
-              << "(SPS: " << has_h264_sps << ", PPS: " << has_h264_pps
-              << "). Treating as "
+                 "(SPS: "
+              << has_h264_sps << ", PPS: " << has_h264_pps << "). Treating as "
               << (sps_pps_idr_is_h264_keyframe_ ? "delta" : "key")
               << " frame since WebRTC-SpsPpsIdrIsH264Keyframe is "
               << (sps_pps_idr_is_h264_keyframe_ ? "enabled." : "disabled");
diff --git a/modules/video_coding/receiver.cc b/modules/video_coding/receiver.cc
index 855ece8..2db4e21 100644
--- a/modules/video_coding/receiver.cc
+++ b/modules/video_coding/receiver.cc
@@ -114,7 +114,8 @@
     int frame_delay = static_cast<int>(std::abs(render_time_ms - now_ms));
     RTC_LOG(LS_WARNING)
         << "A frame about to be decoded is out of the configured "
-        << "delay bounds (" << frame_delay << " > " << max_video_delay_ms_
+           "delay bounds ("
+        << frame_delay << " > " << max_video_delay_ms_
         << "). Resetting the video jitter buffer.";
     timing_error = true;
   } else if (static_cast<int>(timing_->TargetVideoDelay()) >
diff --git a/modules/video_coding/rtp_frame_reference_finder.cc b/modules/video_coding/rtp_frame_reference_finder.cc
index 4932c70..e09c95f 100644
--- a/modules/video_coding/rtp_frame_reference_finder.cc
+++ b/modules/video_coding/rtp_frame_reference_finder.cc
@@ -384,7 +384,7 @@
                           << " and packet range [" << frame->first_seq_num()
                           << ", " << frame->last_seq_num()
                           << "] already received, "
-                          << " dropping frame.";
+                             " dropping frame.";
       return kDrop;
     }
 
@@ -585,8 +585,9 @@
   size_t temporal_idx = info.gof->temporal_idx[gof_idx];
 
   if (temporal_idx >= kMaxTemporalLayers) {
-    RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers << " temporal "
-                        << "layers are supported.";
+    RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers
+                        << " temporal "
+                           "layers are supported.";
     return true;
   }
 
@@ -628,8 +629,9 @@
 
       size_t temporal_idx = info->gof->temporal_idx[gof_idx];
       if (temporal_idx >= kMaxTemporalLayers) {
-        RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers << " temporal "
-                            << "layers are supported.";
+        RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers
+                            << " temporal "
+                               "layers are supported.";
         return;
       }
 
@@ -646,8 +648,9 @@
 
     size_t temporal_idx = info->gof->temporal_idx[gof_idx];
     if (temporal_idx >= kMaxTemporalLayers) {
-      RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers << " temporal "
-                          << "layers are supported.";
+      RTC_LOG(LS_WARNING) << "At most " << kMaxTemporalLayers
+                          << " temporal "
+                             "layers are supported.";
       return;
     }
 
@@ -783,7 +786,7 @@
                           << " and packet range [" << frame->first_seq_num()
                           << ", " << frame->last_seq_num()
                           << "] already received, "
-                          << " dropping frame.";
+                             " dropping frame.";
       return kDrop;
     }