GN: Add --depfile to generate_incremental_manifest.py action.

build/config/android/internal_rules.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/zip.gni")
 import("//third_party/ijar/ijar.gni")
 
 assert(is_android)
 
@@ skipping 745 matching lines @@
       _android_manifest,
     ]
     outputs = [
       depfile,
       _incremental_android_manifest,
     ]
 
     _rebased_src_manifest = rebase_path(_android_manifest, root_build_dir)
     _rebased_incremental_manifest =
         rebase_path(_incremental_android_manifest, root_build_dir)
+    _rebased_depfile = rebase_path(depfile, root_build_dir)
     args = [
       "--src-manifest=$_rebased_src_manifest",
       "--out-manifest=$_rebased_incremental_manifest",
+      "--depfile=$_rebased_depfile",
     ]
     if (disable_incremental_isolated_processes) {
       args += [ "--disable-isolated-processes" ]
     }
   }
 
   _incremental_package_resources_target_name =
       "${target_name}_incremental__package_resources"
 
   # TODO(agrieve): See if we can speed up this step by swapping the manifest
@@ skipping 865 matching lines @@
     ]
     args = [
       "--depfile",
       rebase_path(depfile, root_build_dir),
       "--script-output-path",
       rebase_path(generated_script, root_build_dir),
     ]
     args += test_runner_args
   }
 }