GN(Android): Stop specifying depfile under outputs

build/config/android/internal_rules.gni

Index: build/config/android/internal_rules.gni
diff --git a/build/config/android/internal_rules.gni b/build/config/android/internal_rules.gni
index db0c06185bfd8fc0b3adc2ad43ac6c477f1f1d94..c15d1ddced346e14b4a6fd8d4a39c1d768fe547c 100644
--- a/build/config/android/internal_rules.gni
+++ b/build/config/android/internal_rules.gni
@@ -151,7 +151,6 @@ template("write_build_config") {
     _rebased_deps_configs = rebase_path(_deps_configs, root_build_dir)
 
     outputs = [
-      depfile,
       build_config,
     ]
 
@@ -389,7 +388,7 @@ template("copy_ex") {
 
     depfile = "$target_gen_dir/$target_name.d"
     outputs = [
-      depfile,
+      depfile,  # Doubles as a stamp file.

[Dirk Pranke, 2016/09/06 01:28:53]

This just seems like a bad idea, even if it's theoretically safe (because it'll
lead to confusion). 

Can we create a separate stamp file?

[agrieve, 2016/09/06 18:51:46]

Agreed. Fixed.

     ]
 
     args = [
@@ -610,7 +609,6 @@ template("test_runner_script") {
 
     generated_script = "$root_build_dir/bin/run_${_test_name}"
     outputs = [
-      depfile,
       generated_script,
     ]
     data += [ generated_script ]
@@ -677,7 +675,6 @@ if (enable_java_templates) {
       ]
 
       outputs = [
-        depfile,
         _config_path,
         _result_path,
       ]
@@ -769,7 +766,6 @@ if (enable_java_templates) {
       }
       depfile = "${target_gen_dir}/${target_name}.d"
       outputs = [
-        depfile,
         _output_jar_path,
         "$_output_jar_path.dump",
         "$_output_jar_path.seeds",
@@ -822,7 +818,6 @@ if (enable_java_templates) {
       ]
 
       outputs = [
-        depfile,
         _result_path,
       ]
 
@@ -870,7 +865,6 @@ if (enable_java_templates) {
         _build_config,
       ]
       outputs = [
-        depfile,
         java_script,
       ]
       forward_variables_from(invoker, [ "deps" ])
@@ -931,7 +925,6 @@ if (enable_java_templates) {
         main_dex_rules = "//build/android/main_dex_classes.flags"
 
         outputs = [
-          depfile,
           _main_dex_list_path,
         ]
 
@@ -968,7 +961,6 @@ if (enable_java_templates) {
       script = "//build/android/gyp/dex.py"
       depfile = "$target_gen_dir/$target_name.d"
       outputs = [
-        depfile,
         invoker.output,
       ]
 
@@ -1160,7 +1152,6 @@ if (enable_java_templates) {
                  invoker.input_jar_path,
                ]
       outputs = [
-        depfile,
         _coverage_file,
         _source_dirs_listing_file,
         invoker.output_jar_path,
@@ -1235,7 +1226,6 @@ if (enable_java_templates) {
       }
 
       outputs = [
-        depfile,
         invoker.output_apk_path,
       ]
 
@@ -1332,7 +1322,6 @@ if (enable_java_templates) {
         invoker.keystore_path,
       ]
       outputs = [
-        depfile,
         invoker.output_apk_path,
       ]
       data = [
@@ -1469,7 +1458,6 @@ if (enable_java_templates) {
           inputs += [ _resources_zip ]
         }
         outputs = [
-          depfile,
           invoker.resource_packaged_apk_path,
         ]
 
@@ -1564,7 +1552,6 @@ if (enable_java_templates) {
         _android_manifest,
       ]
       outputs = [
-        depfile,
         _incremental_android_manifest,
       ]
 
@@ -1999,7 +1986,6 @@ if (enable_java_templates) {
       }
 
       outputs = [
-        depfile,
         _javac_jar_path,
         _javac_jar_path + ".md5.stamp",
       ]
@@ -2443,7 +2429,6 @@ if (enable_java_templates) {
 
       depfile = "$target_gen_dir/$target_name.d"
       outputs = [
-        depfile,
         zip_path,
         srcjar_path,
         r_text_path,
@@ -2645,7 +2630,6 @@ if (enable_java_templates) {
 
       script = "//build/android/gyp/generate_split_manifest.py"
       outputs = [
-        depfile,
         invoker.out_manifest,
       ]
       inputs = [