Add support for Resource Rating Tiers

[ Merge of http://go/wvgerrit/67324 ]

This introduces the ability to query resource rating tier information
through the plugin and CDM. Resource rating tiers are also
sent in the client identification portion of the license request.

Bug: 117112392
Test: WV unit/integration tests
Change-Id: I68ac6dfc4362f61150af822bd526e346b5cc4bf7

libwvdrmengine/cdm/core/src/crypto_session.cpp

@@ -1773,6 +1773,25 @@ bool CryptoSession::LoadSrm(const std::string& srm) {
   return true;
 }
 
+bool CryptoSession::GetResourceRatingTier(uint32_t* tier) {
+  LOGV("GetResourceRatingTier");
+  if (!initialized_) return false;
+  if (tier == nullptr) {
+    LOGE("tier destination not provided");
+    return false;
+  }
+  *tier = OEMCrypto_ResourceRatingTier(requested_security_level_);
+  if (*tier < RESOURCE_RATING_TIER_LOW || *tier > RESOURCE_RATING_TIER_HIGH) {
+    uint32_t api_version;
+    if (GetApiVersion(&api_version)) {
+      if (api_version >= OEM_CRYPTO_API_VERSION_SUPPORTS_RESOURCE_RATING_TIER) {
+        LOGW("GetResourceRatingTier: invalid resource rating tier: %d", *tier);
+      }
+    }
+  }
+  return true;
+}
+
 bool CryptoSession::GetBuildInformation(std::string* info) {
   LOGV("GetBuildInformation");
   if (!initialized_) return false;