Adds .reality files QuickLook support

Bug: 1051609
Change-Id: Ife252c5ccad7457bd5944ddff93178ab046049b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2228158Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Ewann Pellé <ewannpv@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775004}

ios/chrome/browser/download/browser_download_service_unittest.mm

@@ -31,6 +31,7 @@
 namespace {
 char kUrl[] = "https://test.test/";
 char kUsdzFileName[] = "important_file.usdz";
+char kRealityFileName[] = "important_file.reality";
 
 // Substitutes real TabHelper for testing.
 template <class TabHelper>
@@ -177,6 +178,23 @@ TEST_F(BrowserDownloadServiceTest, UsdzExtension) {
       1);
 }
 
+// Tests that BrowserDownloadService uses ARQuickLookTabHelper for .REALITY
+// extension.
+TEST_F(BrowserDownloadServiceTest, RealityExtension) {
+  ASSERT_TRUE(download_controller()->GetDelegate());
+  auto task = std::make_unique<web::FakeDownloadTask>(GURL(kUrl), "other");
+  task->SetSuggestedFilename(base::UTF8ToUTF16(kRealityFileName));
+  web::DownloadTask* task_ptr = task.get();
+  download_controller()->GetDelegate()->OnDownloadCreated(
+      download_controller(), &web_state_, std::move(task));
+  ASSERT_EQ(1U, ar_quick_look_tab_helper()->tasks().size());
+  EXPECT_EQ(task_ptr, ar_quick_look_tab_helper()->tasks()[0].get());
+  ASSERT_TRUE(download_manager_tab_helper()->tasks().empty());
+  histogram_tester_.ExpectUniqueSample(
+      "Download.IOSDownloadMimeType",
+      static_cast<base::HistogramBase::Sample>(DownloadMimeTypeResult::Other),
+      1);
+}
 // Tests that BrowserDownloadService uses ARQuickLookTabHelper for USDZ Mime
 // type.
 TEST_F(BrowserDownloadServiceTest, UsdzMimeType) {

ios/chrome/browser/download/usdz_mime_type.cc

@@ -11,11 +11,14 @@ char kUsdzFileExtension[] = ".usdz";
 char kUsdzMimeType[] = "model/vnd.usdz+zip";
 char kLegacyUsdzMimeType[] = "model/usd";
 char kLegacyPixarUsdzMimeType[] = "model/vnd.pixar.usd";
+char krealityFileExtension[] = ".reality";
 
 bool IsUsdzFileFormat(const std::string& mime_type,
                       const base::string16& suggested_filename) {
+  base::FilePath suggested_path =
+      base::FilePath(base::UTF16ToUTF8(suggested_filename));
   return mime_type == kUsdzMimeType || mime_type == kLegacyUsdzMimeType ||
          mime_type == kLegacyPixarUsdzMimeType ||
-         base::FilePath(base::UTF16ToUTF8(suggested_filename))
-             .MatchesExtension(kUsdzFileExtension);
+         suggested_path.MatchesExtension(kUsdzFileExtension) ||
+         suggested_path.MatchesExtension(krealityFileExtension);
 }