Cleanup BUILD.gn files from imports like foo:foo

Repalce all occurrences of foo:foo in deps with just foo in BUILD.gn
files.

Done with Sublime regex replace.
Find: \b([-a-zA-Z0-9_]+):+\1\b
In: *.gn
Replace with: \1

Bug: None
Change-Id: I40aba1b14face687a595b852ffe443cb20197611
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127899
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27225}
diff --git a/modules/video_coding/BUILD.gn b/modules/video_coding/BUILD.gn
index 0cd9566..0e0866c 100644
--- a/modules/video_coding/BUILD.gn
+++ b/modules/video_coding/BUILD.gn
@@ -27,7 +27,7 @@
     "../../rtc_base:rtc_base_approved",
     "../../rtc_base/experiments:alr_experiment",
     "../../rtc_base/experiments:rtt_mult_experiment",
-    "../../system_wrappers:system_wrappers",
+    "../../system_wrappers",
     "//third_party/abseil-cpp/absl/types:optional",
     "//third_party/abseil-cpp/absl/types:variant",
   ]
@@ -50,7 +50,7 @@
     "../../rtc_base:rtc_numerics",
     "../../system_wrappers",
     "../../system_wrappers:field_trial",
-    "../utility:utility",
+    "../utility",
   ]
 }
 
@@ -160,9 +160,9 @@
     "../../api/video:video_frame_i420",
     "../../api/video_codecs:video_codecs_api",
     "../../common_video",
+    "../../rtc_base",
     "../../rtc_base:checks",
     "../../rtc_base:deprecation",
-    "../../rtc_base:rtc_base",
     "../../rtc_base:rtc_base_approved",
     "../../rtc_base:rtc_numerics",
     "../../rtc_base:rtc_task_queue",
@@ -175,7 +175,7 @@
     "../../rtc_base/time:timestamp_extrapolator",
     "../../system_wrappers",
     "../rtp_rtcp:rtp_rtcp_format",
-    "../utility:utility",
+    "../utility",
     "//third_party/abseil-cpp/absl/container:inlined_vector",
     "//third_party/abseil-cpp/absl/types:optional",
     "//third_party/abseil-cpp/absl/types:variant",
@@ -196,8 +196,8 @@
     "../..:webrtc_common",
     "../../api/video:video_frame",
     "../../api/video_codecs:video_codecs_api",
-    "../../common_video:common_video",
-    "../../common_video/generic_frame_descriptor:generic_frame_descriptor",
+    "../../common_video",
+    "../../common_video/generic_frame_descriptor",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
 }
@@ -286,8 +286,8 @@
     "../../api/video_codecs:video_codecs_api",
     "../../media:rtc_h264_profile_id",
     "../../media:rtc_media_base",
+    "../../rtc_base",
     "../../rtc_base:checks",
-    "../../rtc_base:rtc_base",
     "../../rtc_base/system:rtc_export",
     "../../system_wrappers:metrics",
     "//third_party/abseil-cpp/absl/memory",
@@ -308,7 +308,7 @@
     ]
     deps += [
       "../../common_video",
-      "//third_party/ffmpeg:ffmpeg",
+      "//third_party/ffmpeg",
       "//third_party/openh264:encoder",
     ]
 
@@ -340,9 +340,9 @@
     "../../api/video:video_frame",
     "../../api/video:video_frame_i420",
     "../../api/video_codecs:video_codecs_api",
-    "../../common_video:common_video",
+    "../../common_video",
+    "../../rtc_base",
     "../../rtc_base:checks",
-    "../../rtc_base:rtc_base",
     "../../system_wrappers",
     "../rtp_rtcp:rtp_rtcp_format",
   ]
@@ -470,8 +470,8 @@
     "../../common_video",
     "../../media:rtc_media_base",
     "../../media:rtc_vp9_profile",
+    "../../rtc_base",
     "../../rtc_base:checks",
-    "../../rtc_base:rtc_base",
     "../../rtc_base/experiments:rate_control_settings",
     "../../system_wrappers",
     "../../system_wrappers:field_trial",
@@ -545,7 +545,7 @@
       "../../api/video:video_frame",
       "../../api/video:video_frame_i420",
       "../../api/video_codecs:video_codecs_api",
-      "../../common_video:common_video",
+      "../../common_video",
       "../../rtc_base:checks",
       "../../rtc_base:rtc_base_approved",
       "../../test:test_support",
@@ -581,7 +581,7 @@
       "../../api/video:video_frame",
       "../../api/video:video_frame_i420",
       "../../api/video_codecs:video_codecs_api",
-      "../../common_video:common_video",
+      "../../common_video",
       "../../rtc_base:checks",
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_task_queue",
@@ -723,7 +723,7 @@
       "../../media:rtc_media_base",
       "../../media:rtc_simulcast_encoder_adapter",
       "../../media:rtc_vp9_profile",
-      "../../rtc_base:rtc_base",
+      "../../rtc_base",
       "../../test:field_trial",
       "../../test:fileutils",
       "../../test:test_support",
@@ -840,10 +840,10 @@
       "../../api/video:video_frame_i420",
       "../../api/video_codecs:video_codecs_api",
       "../../api/video_codecs:vp8_temporal_layers_factory",
-      "../../common_video:common_video",
+      "../../common_video",
       "../../media:rtc_media_base",
+      "../../rtc_base",
       "../../rtc_base:checks",
-      "../../rtc_base:rtc_base",
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_base_tests_utils",
       "../../rtc_base:rtc_numerics",