Update google genai instrumentation to latest semantic convention.

Co-authored-by: Aaron Abbott <aaronabbott@google.com>

Author: argaj

instrumentation-genai/opentelemetry-instrumentation-google-genai/src/opentelemetry/instrumentation/google_genai/flags.py

@@ -12,12 +12,25 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
+from os import environ
+from typing import Union
 
-_CONTENT_RECORDING_ENV_VAR = (
-    "OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT"
+from opentelemetry.instrumentation._semconv import _StabilityMode
+from opentelemetry.util.genai.environment_variables import (
+    OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT,
 )
+from opentelemetry.util.genai.types import ContentCapturingMode
+from opentelemetry.util.genai.utils import get_content_capturing_mode
 
 
-def is_content_recording_enabled():
-    return os.getenv(_CONTENT_RECORDING_ENV_VAR, "false").lower() == "true"
+def is_content_recording_enabled(
+    mode: _StabilityMode,
+) -> Union[bool, ContentCapturingMode]:
+    if mode == _StabilityMode.DEFAULT:
+        capture_content = environ.get(
+            OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT, "false"
+        )
+        return capture_content.lower() == "true"
+    if mode == _StabilityMode.GEN_AI_LATEST_EXPERIMENTAL:
+        return get_content_capturing_mode()
+    raise RuntimeError(f"{mode} mode not supported")