Enable depend on stamp by default for all GN based grit targets.

This is a cleanup change that removes support for the depfile based on
first grit output.

BUG=466315

Review URL: https://codereview.chromium.org/1030383003

Cr-Commit-Position: refs/heads/master@{#322584}

build/android/gyp/util/build_utils.py

@@ -24,7 +24,7 @@ COLORAMA_ROOT = os.path.join(CHROMIUM_SRC,
                              'third_party', 'colorama', 'src')
 # aapt should ignore OWNERS files in addition the default ignore pattern.
 AAPT_IGNORE_PATTERN = ('!OWNERS:!.svn:!.git:!.ds_store:!*.scc:.*:<dir>_*:' +
-                       '!CVS:!thumbs.db:!picasa.ini:!*~')
+                       '!CVS:!thumbs.db:!picasa.ini:!*~:!*.d.stamp')
 
 
 @contextlib.contextmanager

build/secondary/tools/grit/grit_rule.gni

@@ -372,20 +372,8 @@ template("grit") {
     script = "//tools/grit/grit.py"
     inputs = grit_inputs
 
-    # TODO(knn): Remove this once grit has rolled to recognize the flag.
-    depend_on_stamp =
-        defined(invoker.depend_on_stamp) && invoker.depend_on_stamp
-    if (depend_on_stamp) {
-      # Need this for migrating existing targets without clobbering.
     depfile = "$output_dir/${grit_output_name}_stamp.d"
-      outputs = [
-        "${depfile}.stamp",
-      ]
-    } else {
-      depfile = "$output_dir/${grit_output_name}.d"
-      outputs = []
-    }
-    outputs += grit_outputs
+    outputs = [ "${depfile}.stamp" ] + grit_outputs
 
     args = [
       "-i",
@@ -406,11 +394,8 @@ template("grit") {
               "--depfile",
               rebase_path(depfile, root_build_dir),
               "--write-only-new=1",
-    ]
-    if (depend_on_stamp) {
-      args += [ "--depend-on-stamp" ]
-    }
-    args += grit_defines
+              "--depend-on-stamp",
+            ] + grit_defines
 
     # Add extra defines with -D flags.
     if (defined(invoker.defines)) {

components/policy/BUILD.gn

@@ -109,7 +109,6 @@ if (enable_configuration_policy) {
     import("resources/policy_templates.gni")
     source = "resources/policy_templates.grd"
     use_qualified_include = true
-    depend_on_stamp = true
     output_dir = "$root_gen_dir/chrome"
     outputs = policy_templates_doc_outputs
     if (is_android) {