[Fuchsia] Add audio codecs to HW-secure codecs set

Previously WidevineKeySystemProperties was initialized with
hw_secure_codecs containing only video codecs, which was preventing
playback on sites that require HW_SECURE_ALL robustness.

Bug: b/141148085, b/141251412
Change-Id: Ia2909e47fa844a50655047132bfa04cfe317c222
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1841744
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703097}

fuchsia/engine/renderer/web_engine_content_renderer_client.cc

@@ -104,6 +104,11 @@ void WebEngineContentRendererClient::AddSupportedKeySystems(
       supported_video_codecs |= media::EME_CODEC_AVC1;
     }
 
+    media::SupportedCodecs supported_audio_codecs = media::EME_CODEC_AUDIO_ALL;
+
+    media::SupportedCodecs supported_codecs =
+        supported_video_codecs | supported_audio_codecs;
+
     base::flat_set<media::EncryptionMode> encryption_schemes{
         media::EncryptionMode::kCenc, media::EncryptionMode::kCbcs};
 
@@ -111,10 +116,10 @@ void WebEngineContentRendererClient::AddSupportedKeySystems(
     // Chromium. Hardware secured decoders are only available for supported
     // video codecs.
     key_systems->emplace_back(new cdm::WidevineKeySystemProperties(
-        media::EME_CODEC_AUDIO_ALL | supported_video_codecs,  // codecs
-        encryption_schemes,      // encryption schemes
-        supported_video_codecs,  // hw secure codecs
-        encryption_schemes,      // hw secure encryption schemes
+        supported_codecs,    // codecs
+        encryption_schemes,  // encryption schemes
+        supported_codecs,    // hw secure codecs
+        encryption_schemes,  // hw secure encryption schemes
         cdm::WidevineKeySystemProperties::Robustness::
             HW_SECURE_CRYPTO,  // max audio robustness
         cdm::WidevineKeySystemProperties::Robustness::