Add a field study to use new reload behavior even on desktops

content/browser/loader/reload_cache_control_browsertest.cc

Index: content/browser/loader/reload_cache_control_browsertest.cc
diff --git a/content/browser/loader/reload_cache_control_browsertest.cc b/content/browser/loader/reload_cache_control_browsertest.cc
index 94ae06d08bf072a44834aac9913d39a8f57a4f74..38586762a6eea3fa9c68ce15ff2ad8a2b795f68e 100644
--- a/content/browser/loader/reload_cache_control_browsertest.cc
+++ b/content/browser/loader/reload_cache_control_browsertest.cc
@@ -6,7 +6,9 @@
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/feature_list.h"
 #include "base/files/file_path.h"
+#include "content/public/common/content_features.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/shell/browser/shell.h"
@@ -68,6 +70,25 @@ class ReloadCacheControlBrowserTest : public ContentBrowserTest {
   DISALLOW_COPY_AND_ASSIGN(ReloadCacheControlBrowserTest);
 };
 
+class ReloadCacheControlWithAnExperimentBrowserTest
+    : public ReloadCacheControlBrowserTest {
+ protected:
+  ReloadCacheControlWithAnExperimentBrowserTest() = default;
+  ~ReloadCacheControlWithAnExperimentBrowserTest() override = default;
+
+  void SetUpOnMainThread() override {
+    base::FeatureList::ClearInstanceForTesting();
+    std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+    feature_list->InitializeFromCommandLine(
+        features::kNonValidatingReloadOnNormalReload.name, std::string());
+    base::FeatureList::SetInstance(std::move(feature_list));
+
+    ReloadCacheControlBrowserTest::SetUpOnMainThread();
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(ReloadCacheControlWithAnExperimentBrowserTest);
+};
+
 IN_PROC_BROWSER_TEST_F(ReloadCacheControlBrowserTest, NormalReload) {
   GURL url(embedded_test_server()->GetURL(kReloadTestPath));
 
@@ -104,6 +125,27 @@ IN_PROC_BROWSER_TEST_F(ReloadCacheControlBrowserTest, BypassingReload) {
   EXPECT_EQ(kNoCacheCacheControl, request_log_[3].cache_control);
 }
 
+IN_PROC_BROWSER_TEST_F(ReloadCacheControlWithAnExperimentBrowserTest,
+                       ReloadMainResource) {
+  GURL url(embedded_test_server()->GetURL(kReloadTestPath));
+
+  EXPECT_TRUE(NavigateToURL(shell(), url));
+  ReloadBlockUntilNavigationsComplete(shell(), 1);
+
+  ASSERT_EQ(4UL, request_log_.size());
+  EXPECT_EQ(kReloadTestPath, request_log_[0].relative_url);
+  EXPECT_EQ(kNoCacheControl, request_log_[0].cache_control);
+  EXPECT_EQ(kReloadImagePath, request_log_[1].relative_url);
+  EXPECT_EQ(kNoCacheControl, request_log_[1].cache_control);
+
+  EXPECT_EQ(kReloadTestPath, request_log_[2].relative_url);
+  EXPECT_EQ(kMaxAgeCacheControl, request_log_[2].cache_control);
+  EXPECT_EQ(kReloadImagePath, request_log_[3].relative_url);
+  EXPECT_EQ(kNoCacheControl, request_log_[3].cache_control);
+}
+
+// TODO(toyoshim): Add another set of reload tests with DevTools open.
+
 }  // namespace
 
 }  // namespace content