Remove obsoleted target_arch==armv7 from opus.gyp.

third_party/opus/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/arm.gni")
 
 # If fixed point implementation shall be used (otherwise float).
-use_opus_fixed_point = ((is_android || is_chromeos ||
-                         (is_ios && arm_version == 7)) && cpu_arch == "arm")
+use_opus_fixed_point = (cpu_arch == "arm" || cpu_arch == "arm64")
 
 # If ARM optimizations shall be used to accelerate performance.
-use_opus_arm_optimization = use_opus_fixed_point
+use_opus_arm_optimization = (cpu_arch == "arm")
 
 # If OPUS Run Time CPU Detections (RTCD) shall be used.
-use_opus_rtcd = ((is_android || is_chromeos) && cpu_arch == "arm")
+# Based on the conditions in celt/arm/armcpu.c:
+# defined(_MSC_VER) || defined(__linux__).
+use_opus_rtcd = (cpu_arch == "arm" && (is_win || is_android || is_linux))
 
 config("opus_config") {
   include_dirs = [
     "src/include",
   ]
 }
 
 if (use_opus_rtcd) {
   action("convert_rtcd_assembler") {
     script = "convert_rtcd_assembler.py"
@@ skipping 50 matching lines @@
   }
 
   if (is_posix && !is_android) {
     # Suppress a warning given by opus_decoder.c that tells us
     # optimizations are turned off.
     cflags = [
       "-Wno-#pragma-messages",
     ]
   }
 
+  if (!is_debug && is_posix && (cpu_arch == "arm" || cpu_arch == "arm64")) {
+    configs -= [ "//build/config/compiler:optimize" ]
+    configs += [ "//build/config/compiler:optimize_max" ]
+  }
+
   if (use_opus_fixed_point) {
     sources += gypi_values.opus_fixed_sources
 
     defines += [ "FIXED_POINT" ]
 
     include_dirs += [
       "src/silk/fixed",
     ]
   } else {
     sources += gypi_values.opus_float_sources
@@ skipping 60 matching lines @@
   }
   if (is_android) {
     libs = [ "log" ]
   }
   if (is_clang) {
     cflags = [ "-Wno-absolute-value" ]
   }
 
   deps = [ ":opus" ]
 }