SimpleCache: open with fewer seeks.

net/disk_cache/entry_unittest.cc

Index: net/disk_cache/entry_unittest.cc
diff --git a/net/disk_cache/entry_unittest.cc b/net/disk_cache/entry_unittest.cc
index 3612fab63bfd632254448f65b20c6e242dbc77af..50c7c7b9a0f5111fed9ef6abd41ef3582e126d5c 100644
--- a/net/disk_cache/entry_unittest.cc
+++ b/net/disk_cache/entry_unittest.cc
@@ -2708,7 +2708,7 @@ TEST_F(DiskCacheEntryTest, SimpleCacheNoEOF) {
   SetSimpleCacheMode();
   InitCache();
 
-  const char key[] = "the first key";
+  const std::string key("the first key");
 
   disk_cache::Entry* entry = NULL;
   ASSERT_EQ(net::OK, CreateEntry(key, &entry));
@@ -2728,9 +2728,8 @@ TEST_F(DiskCacheEntryTest, SimpleCacheNoEOF) {
   int kTruncationBytes = -static_cast<int>(sizeof(disk_cache::SimpleFileEOF));
   const base::FilePath entry_path = cache_path_.AppendASCII(
       disk_cache::simple_util::GetFilenameFromKeyAndFileIndex(key, 0));
-  const int64_t invalid_size =
-      disk_cache::simple_util::GetFileSizeFromKeyAndDataSize(key,
-                                                             kTruncationBytes);
+  const int64_t invalid_size = disk_cache::simple_util::GetFileSizeFromDataSize(
+      key.size(), kTruncationBytes);
   EXPECT_TRUE(TruncatePath(entry_path, invalid_size));
   EXPECT_EQ(net::ERR_FAILED, OpenEntry(key, &entry));
   DisableIntegrityCheck();
@@ -3688,7 +3687,7 @@ TEST_F(DiskCacheEntryTest, SimpleCacheStream1SizeChanges) {
   SetSimpleCacheMode();
   InitCache();
   disk_cache::Entry* entry = NULL;
-  const char key[] = "the key";
+  const std::string key("the key");
   const int kSize = 100;
   scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(kSize));
   scoped_refptr<net::IOBuffer> buffer_read(new net::IOBuffer(kSize));
@@ -3726,7 +3725,7 @@ TEST_F(DiskCacheEntryTest, SimpleCacheStream1SizeChanges) {
   int sparse_data_size = 0;
   disk_cache::SimpleEntryStat entry_stat(
       base::Time::Now(), base::Time::Now(), data_size, sparse_data_size);
-  int eof_offset = entry_stat.GetEOFOffsetInFile(key, 0);
+  int eof_offset = entry_stat.GetEOFOffsetInFile(key.size(), 0);
   disk_cache::SimpleFileEOF eof_record;
   ASSERT_EQ(static_cast<int>(sizeof(eof_record)),
             entry_file0.Read(eof_offset, reinterpret_cast<char*>(&eof_record),