optimize compile in file of DEPS (#79)

* optimize compile in file of DEPS

- fixed the path of get_landmines.py
- changed the use of download_from_google_storage

* bugfix : error use for hook of landmines

DEPS

@@ -2897,7 +2897,7 @@ hooks = [
         'python',
         'src/build/landmines.py',
         '--landmine-scripts',
-        'src/tools_webrtc/get_landmines.py',
+        'src/build/get_landmines.py',
         '--src-dir',
         'src',
     ],
@@ -3080,8 +3080,7 @@ hooks = [
     'name': 'msan_chained_origins',
     'pattern': '.',
     'condition': 'checkout_instrumented_libraries',
-    'action': [ 'python',
-                'src/third_party/depot_tools/download_from_google_storage.py',
+    'action': [ "download_from_google_storage",
                 "--no_resume",
                 "--no_auth",
                 "--bucket", "chromium-instrumented-libraries",
@@ -3092,8 +3091,7 @@ hooks = [
     'name': 'msan_no_origins',
     'pattern': '.',
     'condition': 'checkout_instrumented_libraries',
-    'action': [ 'python',
-                'src/third_party/depot_tools/download_from_google_storage.py',
+    'action': [ "download_from_google_storage",
                 "--no_resume",
                 "--no_auth",
                 "--bucket", "chromium-instrumented-libraries",