GN: Refactor so that WebRTC compiles with rtc_enable_protobuf=false.

webrtc/logging/BUILD.gn

 # Copyright (c) 2016 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("../build/webrtc.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 37 matching lines @@
   if (rtc_enable_protobuf) {
     defines += [ "ENABLE_RTC_EVENT_LOG" ]
     deps += [ ":rtc_event_log_proto" ]
   }
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 }
 
-if (rtc_include_tests) {
-  rtc_source_set("rtc_event_log_tests") {
-    testonly = true
-    sources = [
-      "rtc_event_log/ringbuffer_unittest.cc",
-      "rtc_event_log/rtc_event_log_unittest.cc",
-      "rtc_event_log/rtc_event_log_unittest_helper.cc",
-    ]
-    deps = [
-      ":rtc_event_log_impl",
-      ":rtc_event_log_parser",
-      "../call",
-      "../modules/rtp_rtcp",
-      "../system_wrappers:metrics_default",
-      "//testing/gmock",
-      "//testing/gtest",
-    ]
-    if (!build_with_chromium && is_clang) {
-      # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
-      suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
-    }
-  }
-}
-
 if (rtc_enable_protobuf) {
   proto_library("rtc_event_log_proto") {
     sources = [
       "rtc_event_log/rtc_event_log.proto",
     ]
     proto_out_dir = "webrtc/logging/rtc_event_log"
   }
-}
 
-if (rtc_enable_protobuf) {
   rtc_static_library("rtc_event_log_parser") {
     sources = [
       "rtc_event_log/rtc_event_log_parser.cc",
       "rtc_event_log/rtc_event_log_parser.h",
     ]
 
     public_deps = [
       ":rtc_event_log_proto",
       "..:webrtc_common",
     ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
+
+  if (rtc_include_tests) {
+    rtc_source_set("rtc_event_log_tests") {
+      testonly = true
+      sources = [
+        "rtc_event_log/ringbuffer_unittest.cc",
+        "rtc_event_log/rtc_event_log_unittest.cc",
+        "rtc_event_log/rtc_event_log_unittest_helper.cc",
+      ]
+      deps = [
+        ":rtc_event_log_impl",
+        ":rtc_event_log_parser",
+        "../call",
+        "../modules/rtp_rtcp",
+        "../system_wrappers:metrics_default",
+        "//testing/gmock",
+        "//testing/gtest",
+      ]
+      if (!build_with_chromium && is_clang) {
+        # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
+        suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
+      }
+    }
+  }
 }