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/examples/androidtests/gradle_project_test.py b/examples/androidtests/gradle_project_test.py
index 1f04960..0f11752 100644
--- a/examples/androidtests/gradle_project_test.py
+++ b/examples/androidtests/gradle_project_test.py
@@ -62,7 +62,7 @@
 
   try:
     _RunCommand([GENERATE_GRADLE_SCRIPT, '--output-directory', output_dir,
-        '--target', '//webrtc/examples:AppRTCMobile',
+        '--target', '//examples:AppRTCMobile',
         '--project-dir', project_dir,
         '--use-gradle-process-resources', '--split-projects', '--canary'])
     _RunCommand([GRADLEW_BIN, 'assembleDebug'], project_dir)