Fixing WebRTC after moving from src/webrtc to src/

In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC
from src/webrtc to src/ (in order to preserve an healthy git history).
This CL takes care of fixing header guards, #include paths, etc...

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org


Bug: chromium:611808
Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578
Reviewed-on: https://webrtc-review.googlesource.com/1561
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19846}
diff --git a/rtc_tools/event_log_visualizer/plot_protobuf.h b/rtc_tools/event_log_visualizer/plot_protobuf.h
index e4670db..5c5cce1 100644
--- a/rtc_tools/event_log_visualizer/plot_protobuf.h
+++ b/rtc_tools/event_log_visualizer/plot_protobuf.h
@@ -7,14 +7,14 @@
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
-#ifndef WEBRTC_RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_
-#define WEBRTC_RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_
+#ifndef RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_
+#define RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_
 
-#include "webrtc/rtc_base/ignore_wundef.h"
+#include "rtc_base/ignore_wundef.h"
 RTC_PUSH_IGNORING_WUNDEF()
-#include "webrtc/rtc_tools/event_log_visualizer/chart.pb.h"
+#include "rtc_tools/event_log_visualizer/chart.pb.h"
 RTC_POP_IGNORING_WUNDEF()
-#include "webrtc/rtc_tools/event_log_visualizer/plot_base.h"
+#include "rtc_tools/event_log_visualizer/plot_base.h"
 
 namespace webrtc {
 namespace plotting {
@@ -39,4 +39,4 @@
 }  // namespace plotting
 }  // namespace webrtc
 
-#endif  // WEBRTC_RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_
+#endif  // RTC_TOOLS_EVENT_LOG_VISUALIZER_PLOT_PROTOBUF_H_