Remove destruction-only TearDown() methods in Drive related test.

chrome/browser/drive/drive_uploader_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/drive/drive_uploader.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 274 matching lines @@
     return CancelCallback();
   }
 };
 
 class DriveUploaderTest : public testing::Test {
  public:
   virtual void SetUp() OVERRIDE {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   }
 
-  virtual void TearDown() OVERRIDE {
-    ASSERT_TRUE(temp_dir_.Delete());
-  }
-
  protected:
   content::TestBrowserThreadBundle thread_bundle_;
   base::ScopedTempDir temp_dir_;
 };
 
 }  // namespace
 
 TEST_F(DriveUploaderTest, UploadExisting0KB) {
   base::FilePath local_path;
   std::string data;
@@ skipping 227 matching lines @@
   EXPECT_EQ(HTTP_SUCCESS, error);
   EXPECT_TRUE(upload_location.is_empty());
   ASSERT_TRUE(resource_entry);
   EXPECT_EQ(kTestDummyId, resource_entry->id());
   ASSERT_EQ(1U, upload_progress_values.size());
   EXPECT_EQ(test_util::ProgressInfo(1024 * 1024, 1024 * 1024),
             upload_progress_values[0]);
 }
 
 }  // namespace drive