Added member data to classes to support download resumption.

content/browser/download/base_file_unittest.cc

Index: content/browser/download/base_file_unittest.cc
diff --git a/content/browser/download/base_file_unittest.cc b/content/browser/download/base_file_unittest.cc
index 6d6edc74e1d6efb113358ba0c520ff1c8056ddf8..eda97dac7d1f07b0fcf9cf3cb3d0665c346f7154 100644
--- a/content/browser/download/base_file_unittest.cc
+++ b/content/browser/download/base_file_unittest.cc
@@ -251,8 +251,12 @@ TEST_F(BaseFileTest, MultipleWrites) {
 
 // Write data to the file once and calculate its sha256 hash.
 TEST_F(BaseFileTest, SingleWriteWithHash) {
+  std::string partial_hash;
   ASSERT_EQ(net::OK, base_file_->Initialize(true));
+  // Can get partial hashes before Finish() is called.
+  EXPECT_TRUE(base_file_->GetSha256Hash(&partial_hash));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData1));
+  EXPECT_TRUE(base_file_->GetSha256Hash(&partial_hash));
   base_file_->Finish();
 
   std::string hash;
@@ -269,8 +273,6 @@ TEST_F(BaseFileTest, MultipleWritesWithHash) {
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData1));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData2));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData3));
-  // no hash before Finish() is called either.
-  EXPECT_FALSE(base_file_->GetSha256Hash(&hash));
   base_file_->Finish();
 
   EXPECT_TRUE(base_file_->GetSha256Hash(&hash));