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/api/DEPS b/api/DEPS
index fad1d84..1e8e347 100644
--- a/api/DEPS
+++ b/api/DEPS
@@ -1,30 +1,30 @@
 include_rules = [
   "+third_party/libyuv",
-  "+webrtc/common_video",
-  "+webrtc/media",
-  "+webrtc/p2p",
-  "+webrtc/pc",
+  "+common_video",
+  "+media",
+  "+p2p",
+  "+pc",
 ]
 
 specific_include_rules = {
   "peerconnection_jni\.cc": [
-    "+webrtc/voice_engine",
+    "+voice_engine",
   ],
 
   # TODO(ossu): Remove this exception when {builtin_,}audio_encoder_factory.h
   # has moved to api/.
   "peerconnectioninterface\.h": [
-    "+webrtc/call/callfactoryinterface.h",
-    "+webrtc/logging/rtc_event_log/rtc_event_log_factory_interface.h",
-    "+webrtc/modules/audio_coding/codecs/audio_encoder_factory.h",
-    "+webrtc/modules/audio_coding/codecs/builtin_audio_encoder_factory.h",
+    "+call/callfactoryinterface.h",
+    "+logging/rtc_event_log/rtc_event_log_factory_interface.h",
+    "+modules/audio_coding/codecs/audio_encoder_factory.h",
+    "+modules/audio_coding/codecs/builtin_audio_encoder_factory.h",
   ],
 
   # Needed because AudioEncoderOpus is in the wrong place for
   # backwards compatibilty reasons. See
   # https://bugs.chromium.org/p/webrtc/issues/detail?id=7847
   "audio_encoder_opus\.h": [
-    "+webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus.h",
+    "+modules/audio_coding/codecs/opus/audio_encoder_opus.h",
   ],
 
   # We allow .cc files in webrtc/api/ to #include a bunch of stuff
@@ -32,10 +32,10 @@
   # their #includes to whoever's #including them, but .cc files do not
   # since no one #includes them.
   ".*\.cc": [
-    "+webrtc/modules/audio_coding",
+    "+modules/audio_coding",
   ],
 
   ".*i420_buffer\.h": [
-    "+webrtc/system_wrappers/include/aligned_malloc.h",
+    "+system_wrappers/include/aligned_malloc.h",
   ],
 }