Fix android depfiles to always list GN's outputs[0]

components/cronet/tools/generate_javadoc.py

Index: components/cronet/tools/generate_javadoc.py
diff --git a/components/cronet/tools/generate_javadoc.py b/components/cronet/tools/generate_javadoc.py
index 7eb3bac656693ac76dcd8ca3da094b2153016fab..3914b91ed235643cbecda7911d1e3ebce6bdf5d6 100755
--- a/components/cronet/tools/generate_javadoc.py
+++ b/components/cronet/tools/generate_javadoc.py
@@ -57,6 +57,7 @@ def main():
   parser.add_option('--overview-file', help='Path of the overview page')
   parser.add_option('--readme-file', help='Path of the README.md')
   parser.add_option('--lib-java-dir', help='Directory containing java libs')
+  parser.add_option('--stamp', help='Path to touch on success.')
 
   options, _ = parser.parse_args()
   # A temporary directory to put the output of cronet api source jar files.
@@ -72,12 +73,14 @@ def main():
 
   GenerateJavadoc(options, os.path.abspath(unzipped_jar_path))
 
+  if options.stamp:
+    build_utils.Touch(options.stamp)
   if options.depfile:
-    input_paths = []
+    assert options.stamp
+    deps = []
     for root, _, filenames in os.walk(options.input_dir):
-      input_paths.extend(os.path.join(root, f) for f in filenames)
-    build_utils.WriteDepfile(options.depfile,
-                             input_paths + build_utils.GetPythonDependencies())
+      deps.extend(os.path.join(root, f) for f in filenames)
+    build_utils.WriteDepfile(options.depfile, options.stamp, deps)
   # Clean up temporary output directory.
   build_utils.DeleteDirectory(unzipped_jar_path)