arc: Use the MIME type returned by the container to handle content URLs

chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc

Index: chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc
diff --git a/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc b/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc
index 0d04ab304bb65487822fd9a227045db1069420f3..d334a08ee94beece86520defcb94a3c731d87b79 100644
--- a/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc
+++ b/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_unittest.cc
@@ -79,6 +79,13 @@ class ArcFileSystemOperationRunnerTest : public testing::Test {
     runner_->GetFileSize(
         GURL(kUrl),
         base::Bind([](int* counter, int64_t size) { ++*counter; }, counter));
+    runner_->GetMimeType(
+        GURL(kUrl),
+        base::Bind(
+            [](int* counter, const base::Optional<std::string>& mime_type) {
+              ++*counter;
+            },
+            counter));
     runner_->OpenFileToRead(
         GURL(kUrl),
         base::Bind([](int* counter, mojo::ScopedHandle handle) { ++*counter; },
@@ -105,7 +112,7 @@ TEST_F(ArcFileSystemOperationRunnerTest, RunImmediately) {
   CallSetShouldDefer(false);
   CallAllFunctions(&counter);
   base::RunLoop().RunUntilIdle();
-  EXPECT_EQ(6, counter);
+  EXPECT_EQ(7, counter);
 }
 
 TEST_F(ArcFileSystemOperationRunnerTest, DeferAndRun) {
@@ -117,7 +124,7 @@ TEST_F(ArcFileSystemOperationRunnerTest, DeferAndRun) {
 
   CallSetShouldDefer(false);
   base::RunLoop().RunUntilIdle();
-  EXPECT_EQ(6, counter);
+  EXPECT_EQ(7, counter);
 }
 
 TEST_F(ArcFileSystemOperationRunnerTest, DeferAndDiscard) {
@@ -140,7 +147,7 @@ TEST_F(ArcFileSystemOperationRunnerTest, FileInstanceUnavailable) {
   CallSetShouldDefer(false);
   CallAllFunctions(&counter);
   base::RunLoop().RunUntilIdle();
-  EXPECT_EQ(6, counter);
+  EXPECT_EQ(7, counter);
 }
 
 }  // namespace arc