Add WARN_UNUSED_RESULT to base::Time methods that return bool.

content/browser/blob_storage/blob_storage_context_unittest.cc

 // Copyright 2014 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 "storage/browser/blob/blob_storage_context.h"
 
 #include <stdint.h>
 
 #include <limits>
 #include <memory>
@@ skipping 572 matching lines @@
   EXPECT_EQ(0lu, context_->memory_controller().disk_usage());
 }
 
 TEST_F(BlobStorageContextTest, CompoundBlobs) {
   const std::string kId1("id1");
   const std::string kId2("id2");
   const std::string kId3("id3");
 
   // Setup a set of blob data for testing.
   base::Time time1, time2;
-  base::Time::FromString("Tue, 15 Nov 1994, 12:45:26 GMT", &time1);
-  base::Time::FromString("Mon, 14 Nov 1994, 11:30:49 GMT", &time2);
+  ASSERT_TRUE(base::Time::FromString("Tue, 15 Nov 1994, 12:45:26 GMT", &time1));
+  ASSERT_TRUE(base::Time::FromString("Mon, 14 Nov 1994, 11:30:49 GMT", &time2));
 
   BlobDataBuilder blob_data1(kId1);
   blob_data1.AppendData("Data1");
   blob_data1.AppendData("Data2");
   blob_data1.AppendFile(base::FilePath(FILE_PATH_LITERAL("File1.txt")), 10,
                         1024, time1);
 
   BlobDataBuilder blob_data2(kId2);
   blob_data2.AppendData("Data3");
   blob_data2.AppendBlob(kId1, 8, 100);
@@ skipping 283 matching lines @@
   EXPECT_TRUE(file_runner_->HasPendingTask());
   file_runner_->RunPendingTasks();
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(0lu, context_->memory_controller().memory_usage());
   EXPECT_EQ(0lu, context_->memory_controller().disk_usage());
 }
 
 // TODO(michaeln): tests for the deprecated url stuff
 
 }  // namespace storage