Fix the failed cases in URLFetcherFileTest on Android.

net/test/remote_test_server.h

Index: net/test/remote_test_server.h
diff --git a/net/test/remote_test_server.h b/net/test/remote_test_server.h
index 417eda8bad69903cdef5f012de1bc93c048f677f..82ac4713a4f25c6b3e830edb55033940fdfead33 100644
--- a/net/test/remote_test_server.h
+++ b/net/test/remote_test_server.h
@@ -37,6 +37,12 @@ class RemoteTestServer : public BaseTestServer {
   // Stops the Python test server that is running on the host machine.
   bool Stop();
 
+  // Returns the actual path of document root for the test cases. This function
+  // should be called by test cases to retrieve the actual document root path
+  // on the Android device, otherwise document_root() function is used to get
+  // the document root.
+  FilePath GetDocumentRoot() const;
+
  private:
   bool Init(const FilePath& document_root);