Use std::make_unique instead of absl::make_unique.

WebRTC is now using C++14 so there is no need to use the Abseil version
of std::make_unique.

This CL has been created with the following steps:

git grep -l absl::make_unique | sort | uniq > /tmp/make_unique.txt
git grep -l absl::WrapUnique | sort | uniq > /tmp/wrap_unique.txt
git grep -l "#include <memory>" | sort | uniq > /tmp/memory.txt

diff --new-line-format="" --unchanged-line-format="" \
  /tmp/make_unique.txt /tmp/wrap_unique.txt | sort | \
  uniq > /tmp/only_make_unique.txt
diff --new-line-format="" --unchanged-line-format="" \
  /tmp/only_make_unique.txt /tmp/memory.txt | \
  xargs grep -l "absl/memory" > /tmp/add-memory.txt

git grep -l "\babsl::make_unique\b" | \
  xargs sed -i "s/\babsl::make_unique\b/std::make_unique/g"

git checkout PRESUBMIT.py abseil-in-webrtc.md

cat /tmp/add-memory.txt | \
  xargs sed -i \
  's/#include "absl\/memory\/memory.h"/#include <memory>/g'
git cl format
# Manual fix order of the new inserted #include <memory>

cat /tmp/only_make_unique | xargs grep -l "#include <memory>" | \
  xargs sed -i '/#include "absl\/memory\/memory.h"/d'

git ls-files | grep BUILD.gn | \
  xargs sed -i '/\/\/third_party\/abseil-cpp\/absl\/memory/d'

python tools_webrtc/gn_check_autofix.py \
  -m tryserver.webrtc -b linux_rel

# Repead the gn_check_autofix step for other platforms

git ls-files | grep BUILD.gn | \
  xargs sed -i 's/absl\/memory:memory/absl\/memory/g'
git cl format

Bug: webrtc:10945
Change-Id: I3fe28ea80f4dd3ba3cf28effd151d5e1f19aff89
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/153221
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29209}
diff --git a/modules/audio_coding/BUILD.gn b/modules/audio_coding/BUILD.gn
index cb57710..8c5fb00 100644
--- a/modules/audio_coding/BUILD.gn
+++ b/modules/audio_coding/BUILD.gn
@@ -103,7 +103,6 @@
     "../../api/audio_codecs:audio_codecs_api",
     "../../common_audio",
     "../../rtc_base:checks",
-    "//third_party/abseil-cpp/absl/memory",
   ]
 }
 
@@ -764,7 +763,6 @@
     "../../rtc_base:rtc_numerics",
     "../../rtc_base:safe_minmax",
     "../../system_wrappers:field_trial",
-    "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/strings",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
@@ -916,7 +914,6 @@
     "../../rtc_base/system:file_wrapper",
     "../../system_wrappers",
     "../../system_wrappers:field_trial",
-    "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
 
@@ -1024,7 +1021,6 @@
     "../../system_wrappers",
     "../../system_wrappers:field_trial",
     "../../system_wrappers:metrics",
-    "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/strings",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
@@ -1098,7 +1094,6 @@
     "../../test:rtp_test_utils",
     "../rtp_rtcp",
     "../rtp_rtcp:rtp_rtcp_format",
-    "//third_party/abseil-cpp/absl/memory:memory",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
 
@@ -1181,7 +1176,6 @@
       "../../rtc_base:rtc_base_approved",
       "../rtp_rtcp",
       "../rtp_rtcp:rtp_rtcp_format",
-      "//third_party/abseil-cpp/absl/memory",
       "//third_party/abseil-cpp/absl/types:optional",
     ]
     public_deps = [
@@ -1324,7 +1318,6 @@
       "../../system_wrappers",
       "../../test:fileutils",
       "../../test:test_support",
-      "//third_party/abseil-cpp/absl/memory",
       "//third_party/abseil-cpp/absl/strings",
       "//third_party/abseil-cpp/absl/types:optional",
     ]
@@ -1475,7 +1468,6 @@
         "../../rtc_base:rtc_base_approved",
         "../../test:audio_codec_mocks",
         "../../test:test_support",
-        "//third_party/abseil-cpp/absl/memory",
       ]
     }
 
@@ -1599,9 +1591,9 @@
     testonly = true
 
     deps = audio_coding_deps + [
+             "//third_party/abseil-cpp/absl/memory",
              "//third_party/abseil-cpp/absl/flags:flag",
              "//third_party/abseil-cpp/absl/flags:parse",
-             "//third_party/abseil-cpp/absl/memory",
              ":audio_coding",
              ":audio_encoder_cng",
              ":neteq_input_audio_tools",