Revert of Base webrtc fuzzers on a template. (patchset #1 id:1 of https://codereview.webrtc.org/1524993002/ )

Reason for revert:
Suspect this is breaking the build:
https://build.chromium.org/p/chromium.fyi/builders/Libfuzzer%20Upload%20Linux/builds/1576/steps/compile/logs/stdio

Original issue's description:
> Base webrtc fuzzers on a template.
>
> Removes noisy dependencies on webrtc_fuzzer_main and removal of
> find_bad_constructs, removes 1-6 lines of gn per fuzzer target.
>
> BUG=webrtc:4771
> R=kjellander@webrtc.org
>
> Committed: https://crrev.com/5ea3da2cbbb0710f9617fb0627c0c4258437b09f
> Cr-Commit-Position: refs/heads/master@{#11022}

TBR=kjellander@webrtc.org,pbos@webrtc.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4771

Review URL: https://codereview.webrtc.org/1528043002

Cr-Commit-Position: refs/heads/master@{#11032}
diff --git a/webrtc/test/fuzzers/BUILD.gn b/webrtc/test/fuzzers/BUILD.gn
index cf4fc5b..7b530b6 100644
--- a/webrtc/test/fuzzers/BUILD.gn
+++ b/webrtc/test/fuzzers/BUILD.gn
@@ -7,7 +7,7 @@
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/features.gni")
-import("webrtc_fuzzer.gni")
+import("//testing/test.gni")
 
 static_library("webrtc_fuzzer_main") {
   public_configs = [ "../..:common_inherited_config" ]
@@ -21,31 +21,51 @@
   ]
 }
 
-webrtc_fuzzer_test("vp9_depacketizer_fuzzer") {
+test("vp9_depacketizer_fuzzer") {
   sources = [
     "vp9_depacketizer_fuzzer.cc",
   ]
   deps = [
+    ":webrtc_fuzzer_main",
     "../../modules/rtp_rtcp",
   ]
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
 }
 
-webrtc_fuzzer_test("vp8_qp_parser_fuzzer") {
+test("vp8_qp_parser_fuzzer") {
   sources = [
     "vp8_qp_parser_fuzzer.cc",
   ]
   deps = [
+    ":webrtc_fuzzer_main",
     "../../modules/video_coding/",
   ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
 }
 
-webrtc_fuzzer_test("producer_fec_fuzzer") {
+test("producer_fec_fuzzer") {
   sources = [
     "producer_fec_fuzzer.cc",
   ]
   deps = [
+    ":webrtc_fuzzer_main",
     "../../modules/rtp_rtcp/",
   ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
 }
 
 source_set("audio_decoder_fuzzer") {
@@ -53,9 +73,12 @@
     "audio_decoder_fuzzer.cc",
     "audio_decoder_fuzzer.h",
   ]
+  deps = [
+    ":webrtc_fuzzer_main",
+  ]
 }
 
-webrtc_fuzzer_test("audio_decoder_ilbc_fuzzer") {
+test("audio_decoder_ilbc_fuzzer") {
   sources = [
     "audio_decoder_ilbc_fuzzer.cc",
   ]
@@ -65,7 +88,7 @@
   ]
 }
 
-webrtc_fuzzer_test("audio_decoder_isac_fuzzer") {
+test("audio_decoder_isac_fuzzer") {
   sources = [
     "audio_decoder_isac_fuzzer.cc",
   ]
@@ -75,7 +98,7 @@
   ]
 }
 
-webrtc_fuzzer_test("audio_decoder_isacfix_fuzzer") {
+test("audio_decoder_isacfix_fuzzer") {
   sources = [
     "audio_decoder_isacfix_fuzzer.cc",
   ]
@@ -85,7 +108,7 @@
   ]
 }
 
-webrtc_fuzzer_test("audio_decoder_opus_fuzzer") {
+test("audio_decoder_opus_fuzzer") {
   sources = [
     "audio_decoder_opus_fuzzer.cc",
   ]
diff --git a/webrtc/test/fuzzers/webrtc_fuzzer.gni b/webrtc/test/fuzzers/webrtc_fuzzer.gni
deleted file mode 100644
index d264392..0000000
--- a/webrtc/test/fuzzers/webrtc_fuzzer.gni
+++ /dev/null
@@ -1,28 +0,0 @@
-# Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
-#
-# Use of this source code is governed by a BSD-style license
-# that can be found in the LICENSE file in the root of the source
-# tree. An additional intellectual property rights grant can be found
-# in the file PATENTS.  All contributing project authors may
-# be found in the AUTHORS file in the root of the source tree.
-
-import("//testing/test.gni")
-
-template("webrtc_fuzzer_test") {
-  assert(defined(invoker.sources), "Need sources in $target_name.")
-
-  test(target_name) {
-    forward_variables_from(invoker, [ "sources" ])
-    deps = [
-      ":webrtc_fuzzer_main",
-    ]
-    if (defined(invoker.deps)) {
-      deps += invoker.deps
-    }
-    if (is_clang) {
-      # Suppress warnings from Chrome's Clang plugins.
-      # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-      configs -= [ "//build/config/clang:find_bad_constructs" ]
-    }
-  }
-}