Make fileBrowserHandler & fileManagerPrivate files compile on chromeos only.

chrome/renderer/resources/renderer_resources.grd

Index: chrome/renderer/resources/renderer_resources.grd
diff --git a/chrome/renderer/resources/renderer_resources.grd b/chrome/renderer/resources/renderer_resources.grd
index 53c3577b41b8eab74609236580b27640823a5dc6..7028a5014c3f4c1b0c4521b16917547f23c92568 100644
--- a/chrome/renderer/resources/renderer_resources.grd
+++ b/chrome/renderer/resources/renderer_resources.grd
@@ -55,8 +55,10 @@
         <include name="IDR_ENTERPRISE_PLATFORM_KEYS_SUBTLE_CRYPTO_JS" file="extensions\enterprise_platform_keys\subtle_crypto.js" type="BINDATA" />
         <include name="IDR_ENTERPRISE_PLATFORM_KEYS_TOKEN_JS" file="extensions\enterprise_platform_keys\token.js" type="BINDATA" />
         <include name="IDR_FEEDBACK_PRIVATE_CUSTOM_BINDINGS_JS" file="extensions\feedback_private_custom_bindings.js" type="BINDATA" />
-        <include name="IDR_FILE_BROWSER_HANDLER_CUSTOM_BINDINGS_JS" file="extensions\file_browser_handler_custom_bindings.js" type="BINDATA" />
-        <include name="IDR_FILE_MANAGER_PRIVATE_CUSTOM_BINDINGS_JS" file="extensions\file_manager_private_custom_bindings.js" type="BINDATA" />
+        <if expr="chromeos">
+          <include name="IDR_FILE_BROWSER_HANDLER_CUSTOM_BINDINGS_JS" file="extensions\file_browser_handler_custom_bindings.js" type="BINDATA" />
+          <include name="IDR_FILE_MANAGER_PRIVATE_CUSTOM_BINDINGS_JS" file="extensions\file_manager_private_custom_bindings.js" type="BINDATA" />
+        </if>
         <include name="IDR_FILE_ENTRY_BINDING_UTIL_JS" file="extensions\file_entry_binding_util.js" type="BINDATA" />
         <include name="IDR_FILE_SYSTEM_CUSTOM_BINDINGS_JS" file="extensions\file_system_custom_bindings.js" type="BINDATA" />
         <include name="IDR_FILE_SYSTEM_PROVIDER_CUSTOM_BINDINGS_JS" file="extensions\file_system_provider_custom_bindings.js" type="BINDATA" />