Enable WebAudio on ARM64 and MIPS

content/child/runtime_features.cc

Index: content/child/runtime_features.cc
diff --git a/content/child/runtime_features.cc b/content/child/runtime_features.cc
index 1b471c07c37f0bbec9816152452e86adf3a15e1e..2a67eb1b7e8f1a32a741ce3ff43d272975c84c17 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -28,12 +28,15 @@ static void SetRuntimeFeatureDefaultsForPlatform() {
     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
     WebRuntimeFeatures::enableEncryptedMedia(false);
   }
-  // WebAudio is enabled by default on ARM and X86 and only when the
-  // MediaCodec API is available.
+  // WebAudio is enabled by default but only when the MediaCodec API
+  // is available.
+  AndroidCpuFamily cpu_family = android_getCpuFamily();
   WebRuntimeFeatures::enableWebAudio(
       media::MediaCodecBridge::IsAvailable() &&
-      ((android_getCpuFamily() == ANDROID_CPU_FAMILY_ARM) ||
-       (android_getCpuFamily() == ANDROID_CPU_FAMILY_X86)));
+      ((cpu_family == ANDROID_CPU_FAMILY_ARM) ||
+       (cpu_family == ANDROID_CPU_FAMILY_ARM64) ||
+       (cpu_family == ANDROID_CPU_FAMILY_X86) ||
+       (cpu_family == ANDROID_CPU_FAMILY_MIPS)));
 
   // Android supports gamepad API for JellyBean and beyond
   WebRuntimeFeatures::enableGamepad(