Refactor Pickle Read methods to use higher performance PickleIterator.

chrome/browser/sessions/compress_data_helper_unittest.cc

Index: chrome/browser/sessions/compress_data_helper_unittest.cc
diff --git a/chrome/browser/sessions/compress_data_helper_unittest.cc b/chrome/browser/sessions/compress_data_helper_unittest.cc
index 3e1da3f0213717fc6dd8b4d9406266d1b9770aba..f993bc5cb532d1b25675ec9ed23d2ab670afc701 100644
--- a/chrome/browser/sessions/compress_data_helper_unittest.cc
+++ b/chrome/browser/sessions/compress_data_helper_unittest.cc
@@ -23,7 +23,7 @@ TEST_F(CompressDataHelperTest, CompressAndDecompressData) {
   EXPECT_GT(bytes_written, 0);
   EXPECT_LT(bytes_written, max_bytes + 1);
 
-  void* it = NULL;
+  PickleIterator it(pickle);
   std::string data_out;
 
   ASSERT_TRUE(CompressDataHelper::ReadAndDecompressStringFromPickle(
@@ -45,7 +45,7 @@ TEST_F(CompressDataHelperTest, CompressAndDecompressEmptyData) {
 
   EXPECT_EQ(0, bytes_written);
 
-  void* it = NULL;
+  PickleIterator it(pickle);
   std::string data_out;
   ASSERT_TRUE(CompressDataHelper::ReadAndDecompressStringFromPickle(
       pickle, &it, &data_out));
@@ -65,7 +65,7 @@ TEST_F(CompressDataHelperTest, TooMuchData) {
   EXPECT_EQ(0, bytes_written);
 
   // When the data is read, we get an empty string back.
-  void* it = NULL;
+  PickleIterator it(pickle);
   std::string data_out;
   ASSERT_TRUE(CompressDataHelper::ReadAndDecompressStringFromPickle(
       pickle, &it, &data_out));