Use /etc/hosts for URLRequestTest.FileTest on Android

net/url_request/url_request_unittest.cc

Index: net/url_request/url_request_unittest.cc
diff --git a/net/url_request/url_request_unittest.cc b/net/url_request/url_request_unittest.cc
index 5c82c9a08cc79d6259c2f2d955104bc4b518008c..e60e6f9dfb77d67c52eeb107f616a9d3a7f24a69 100644
--- a/net/url_request/url_request_unittest.cc
+++ b/net/url_request/url_request_unittest.cc
@@ -832,7 +832,15 @@ TEST_F(URLRequestTest, DataURLImageTest) {
 #if !defined(DISABLE_FILE_SUPPORT)
 TEST_F(URLRequestTest, FileTest) {
   base::FilePath app_path;
+
+#if defined(OS_ANDROID)
+  // Android devices are not guaranteed to be able to read /proc/self/exe
+  // Use /etc/hosts instead
+  app_path = base::FilePath("/etc/hosts");
+#else
   PathService::Get(base::FILE_EXE, &app_path);
+#endif  // OS_ANDROID
+
   GURL app_url = FilePathToFileURL(app_path);
 
   TestDelegate d;