Pass command line arguments onto platform apps which provide the right intent.

chrome/browser/extensions/platform_app_browsertest.cc

Index: chrome/browser/extensions/platform_app_browsertest.cc
diff --git a/chrome/browser/extensions/platform_app_browsertest.cc b/chrome/browser/extensions/platform_app_browsertest.cc
index 3aeac39a9f1de56ada32255e07dcb067dd0f81eb..7d7681950507e77ff5b9fde6a2b1ef68ad2a3d8a 100644
--- a/chrome/browser/extensions/platform_app_browsertest.cc
+++ b/chrome/browser/extensions/platform_app_browsertest.cc
@@ -196,3 +196,14 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, DisallowStorage) {
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, MAYBE_WindowsApi) {
   ASSERT_TRUE(RunPlatformAppTest("platform_apps/windows_api")) << message_;
 }
+
+// Tests that command line parameters get passed through to platform apps
+// via window.intent correctly, and that the file names passed through can be
+// read successfully.
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, DocumentEditor) {
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  FilePath test_doc(test_data_dir_.AppendASCII(
+      "platform_apps/document_editor/test.txt"));
+  command_line->AppendArgPath(test_doc);
+  ASSERT_TRUE(RunPlatformAppTest("platform_apps/document_editor")) << message_;
+}