feat!: use BuiltInCodeExecutor in Runner for CFC.

The BuiltInCodeExecutionTool is deleted.

PiperOrigin-RevId: 761608273

src/google/adk/runners.py

@@ -34,6 +34,7 @@ from .agents.llm_agent import LlmAgent
 from .agents.run_config import RunConfig
 from .artifacts.base_artifact_service import BaseArtifactService
 from .artifacts.in_memory_artifact_service import InMemoryArtifactService
+from .code_executors.built_in_code_executor import BuiltInCodeExecutor
 from .events.event import Event
 from .memory.base_memory_service import BaseMemoryService
 from .memory.in_memory_memory_service import InMemoryMemoryService
@@ -41,7 +42,6 @@ from .sessions.base_session_service import BaseSessionService
 from .sessions.in_memory_session_service import InMemorySessionService
 from .sessions.session import Session
 from .telemetry import tracer
-from .tools._built_in_code_execution_tool import built_in_code_execution
 
 logger = logging.getLogger('google_adk.' + __name__)
 
@@ -409,8 +409,8 @@ class Runner:
             f'CFC is not supported for model: {model_name} in agent:'
             f' {self.agent.name}'
         )
-      if built_in_code_execution not in self.agent.canonical_tools():
+      if not isinstance(self.agent.code_executor, BuiltInCodeExecutor):
-        self.agent.tools.append(built_in_code_execution)
+        self.agent.code_executor = BuiltInCodeExecutor()
 
     return InvocationContext(
         artifact_service=self.artifact_service,

src/google/adk/tools/_built_in_code_execution_tool.py

@@ -1,70 +0,0 @@
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import annotations
-
-import logging
-from typing import TYPE_CHECKING
-
-from deprecated import deprecated
-from google.genai import types
-from typing_extensions import override
-
-from .base_tool import BaseTool
-from .tool_context import ToolContext
-
-if TYPE_CHECKING:
-  from ..models import LlmRequest
-
-logger = logging.getLogger('google_adk.' + __name__)
-
-
-@deprecated(
-    'No longer supported. Please use the new BuiltInCodeExecutor instead.'
-)
-class BuiltInCodeExecutionTool(BaseTool):
-  """A built-in code execution tool that is automatically invoked by Gemini 2 models.
-
-  This tool operates internally within the model and does not require or perform
-  local code execution.
-  """
-
-  def __init__(self):
-    # Name and description are not used because this is a model built-in tool.
-    super().__init__(name='code_execution', description='code_execution')
-
-  @override
-  async def process_llm_request(
-      self,
-      *,
-      tool_context: ToolContext,
-      llm_request: LlmRequest,
-  ) -> None:
-    logger.warning(
-        'BuiltInCodeExecutionTool is deprecated and will be removed in 1.1.0.'
-        ' Please use the new BuiltInCodeExecutor instead.'
-    )
-    if llm_request.model and llm_request.model.startswith('gemini-2'):
-      llm_request.config = llm_request.config or types.GenerateContentConfig()
-      llm_request.config.tools = llm_request.config.tools or []
-      llm_request.config.tools.append(
-          types.Tool(code_execution=types.ToolCodeExecution())
-      )
-    else:
-      raise ValueError(
-          f'Code execution tool is not supported for model {llm_request.model}'
-      )
-
-
-built_in_code_execution = BuiltInCodeExecutionTool()