content_shell: Fix a regression for paths starting with /media/.

components/test_runner/test_runner.cc

Index: components/test_runner/test_runner.cc
diff --git a/components/test_runner/test_runner.cc b/components/test_runner/test_runner.cc
index 99d728b2a6f11354303aa9158f0351c51ffe984d..0c0b5d1ed4b47faff85412d79c8320f562ec06b3 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -1551,6 +1551,7 @@ TestRunner::TestRunner(TestInterfaces* interfaces)
       spellcheck_(new SpellCheckClient(this)),
       chooser_count_(0),
       previously_focused_view_(nullptr),
+      did_request_after_reset_(false),
       weak_factory_(this) {}
 
 TestRunner::~TestRunner() {}
@@ -1575,6 +1576,7 @@ void TestRunner::SetMainView(WebView* web_view) {
 }
 
 void TestRunner::Reset() {
+  did_request_after_reset_ = false;
   top_loading_frame_ = nullptr;
   layout_test_runtime_flags_.Reset();
   mock_screen_orientation_client_->ResetData();