Update FileSystem BrowserTest for quota setting.

Setting quota test for incognito mode was disabled in FileSystem
browser test.
The test is updated to set the quota in incognito browser and the
required available space is updated to match incognito mode available
space.

Bug: 93417
Change-Id: I487c91d892d9a598756ecf6aaedaa38a5807d554
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1566332
Auto-Submit: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#651362}

content/browser/fileapi/file_system_browsertest.cc

@@ -36,31 +36,38 @@ class FileSystemBrowserTest : public ContentBrowserTest,
                               public testing::WithParamInterface<bool> {
  public:
   FileSystemBrowserTest() {
+    is_incognito_ = GetParam();
     feature_list_.InitAndEnableFeature(
         storage::features::kEnableFilesystemInIncognito);
   }
 
   void SimpleTest(const GURL& test_url) {
-    const bool incognito = GetParam();
     // The test page will perform tests on FileAPI, then navigate to either
     // a #pass or #fail ref.
-    Shell* the_browser = incognito ? CreateOffTheRecordBrowser() : shell();
-
     VLOG(0) << "Navigating to URL and blocking.";
-    NavigateToURLBlockUntilNavigationsComplete(the_browser, test_url, 2);
+    NavigateToURLBlockUntilNavigationsComplete(browser(), test_url, 2);
     VLOG(0) << "Navigation done.";
-    std::string result =
-        the_browser->web_contents()->GetLastCommittedURL().ref();
+    std::string result = browser()->web_contents()->GetLastCommittedURL().ref();
     if (result != "pass") {
       std::string js_result;
       ASSERT_TRUE(ExecuteScriptAndExtractString(
-          the_browser, "window.domAutomationController.send(getLog())",
+          browser(), "window.domAutomationController.send(getLog())",
           &js_result));
       FAIL() << "Failed: " << js_result;
     }
   }
 
+  Shell* browser() {
+    if (!browser_)
+      browser_ = is_incognito() ? CreateOffTheRecordBrowser() : shell();
+    return browser_;
+  }
+
+  bool is_incognito() { return is_incognito_; }
+
  protected:
+  bool is_incognito_;
+  Shell* browser_ = nullptr;
   base::test::ScopedFeatureList feature_list_;
 };
 
@@ -70,7 +77,7 @@ class FileSystemBrowserTestWithLowQuota : public FileSystemBrowserTest {
  public:
   void SetUpOnMainThread() override {
     SetLowQuota(BrowserContext::GetDefaultStoragePartition(
-                    shell()->web_contents()->GetBrowserContext())
+                    browser()->web_contents()->GetBrowserContext())
                     ->GetQuotaManager());
   }
 
@@ -87,17 +94,15 @@ class FileSystemBrowserTestWithLowQuota : public FileSystemBrowserTest {
     storage::QuotaSettings settings;
     settings.pool_size = 25 * kMeg;
     settings.per_host_quota = 5 * kMeg;
-    settings.must_remain_available = 100 * kMeg;
+    settings.must_remain_available = 10 * kMeg;
     settings.refresh_interval = base::TimeDelta::Max();
     qm->SetQuotaSettings(settings);
   }
 };
 
-// TODO(https://crbug.com/93417): Expand the test after updating quota
-// managenent for in-memory implementation.
 INSTANTIATE_TEST_SUITE_P(,
                          FileSystemBrowserTestWithLowQuota,
-                         ::testing::Values(false));
+                         ::testing::Bool());
 
 IN_PROC_BROWSER_TEST_P(FileSystemBrowserTest, RequestTest) {
   SimpleTest(GetTestUrl("fileapi", "request_test.html"));