Change grit to depend on test data in the main repository.

tools/grit/grit/testdata/duplicate-name-input.xml

Index: tools/grit/grit/testdata/duplicate-name-input.xml
diff --git a/tools/grit/grit/testdata/duplicate-name-input.xml b/tools/grit/grit/testdata/duplicate-name-input.xml
new file mode 100644
index 0000000000000000000000000000000000000000..cc4d1d65c57fac98ae478e5590ccd4e98d29cb05
--- /dev/null
+++ b/tools/grit/grit/testdata/duplicate-name-input.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<grit base_dir="." latest_public_release="2" current_release="3" source_lang_id="en-US">
+  <release seq="3">
+    <messages>
+        <message name="IDS_GREETING" desc="Printed to greet the currently logged in user">
+          Hello <ph name="USERNAME">%s<ex>Joi</ex></ph>, how are you doing today?
+        </message>
+    </messages>
+    <structures>
+        <!-- Duplicate name here -->
+        <structure type="version" name="IDS_GREETING" file="rc_files/bla.rc" />
+    </structures>
+  </release>
+  <translations>
+    <file path="figs_nl_translations.xml" />
+    <file path="cjk_translations.xml" />
+  </translations>
+  <outputs>
+    <output filename="resource.h" type="rc_header" />
+    <output filename="resource_en.rc" type="rc_all" lang="en-US" />
+    <output filename="resource_fr.rc" type="rc_all" lang="fr-FR" />
+    <output filename="resource_it.rc" type="rc_translateable" lang="it-IT" />
+    <output filename="resource_zh_cn.rc" type="rc_translateable" lang="zh-CN" />
+    <output filename="nontranslateable.rc" type="rc_nontranslateable" />
+  </outputs>
+</grit>