Move find_depot_tools.py to build/

build/download_sdk_extras.py

Index: build/download_sdk_extras.py
diff --git a/build/download_sdk_extras.py b/build/download_sdk_extras.py
index aa1402a54268b5c82e79eadacc6b9947a5f87b50..7c3a678c2d509442abaf432418381b7475a6b82c 100755
--- a/build/download_sdk_extras.py
+++ b/build/download_sdk_extras.py
@@ -13,6 +13,7 @@ script will not do anything for developers.
 TODO(navabi): Move this script (crbug.com/459819).
 """
 
+import find_depot_tools
 import json
 import os
 import shutil
@@ -23,10 +24,8 @@ import zipfile
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
 CHROME_SRC = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir))
 sys.path.insert(0, os.path.join(SCRIPT_DIR, 'android'))
-sys.path.insert(1, os.path.join(CHROME_SRC, 'tools'))
 
 from pylib import constants
-import find_depot_tools
 
 DEPOT_PATH = find_depot_tools.add_depot_tools_to_path()
 GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py')