Code:   void Verify_MakeGroupObsolete() {
    EXPECT_TRUE(delegate()->obsoleted_success_);
    EXPECT_EQ(group_.get(), delegate()->obsoleted_group_.get());
    EXPECT_TRUE(group_->is_obsolete());
    EXPECT_TRUE(storage()->usage_map_.empty());

    AppCacheDatabase::GroupRecord group_record;
    AppCacheDatabase::CacheRecord cache_record;
    EXPECT_FALSE(database()->FindGroup(1, &group_record));
    EXPECT_FALSE(database()->FindCache(1, &cache_record));

    std::vector<AppCacheDatabase::EntryRecord> entry_records;
    database()->FindEntriesForCache(1, &entry_records);
    EXPECT_TRUE(entry_records.empty());
    std::vector<AppCacheDatabase::NamespaceRecord> intercept_records;
    std::vector<AppCacheDatabase::NamespaceRecord> fallback_records;
    database()->FindNamespacesForCache(1, &intercept_records,
                                       &fallback_records);
    EXPECT_TRUE(fallback_records.empty());
    std::vector<AppCacheDatabase::OnlineWhiteListRecord> whitelist_records;
    database()->FindOnlineWhiteListForCache(1, &whitelist_records);
    EXPECT_TRUE(whitelist_records.empty());

     EXPECT_TRUE(storage()->usage_map_.empty());
     EXPECT_EQ(1, mock_quota_manager_proxy_->notify_storage_modified_count_);
     EXPECT_EQ(kOrigin, mock_quota_manager_proxy_->last_origin_);
    EXPECT_EQ(-kDefaultEntrySize, mock_quota_manager_proxy_->last_delta_);
 
     TestFinished();
   }

Vulnerability Type: +Info 
CWE ID: CWE-200
Summary: Resource size information leakage in Blink in Google Chrome prior to 75.0.3770.80 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
Commit Message: Reland "AppCache: Add padding to cross-origin responses."

This is a reland of 85b389caa7d725cdd31f59e9a2b79ff54804b7b7

Initialized CacheRecord::padding_size to 0.

Original change's description:
> AppCache: Add padding to cross-origin responses.
>
> Bug: 918293
> Change-Id: I4f16640f06feac009d6bbbb624951da6d2669f6c
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1488059
> Commit-Queue: Staphany Park <staphany@chromium.org>
> Reviewed-by: Victor Costan <pwnall@chromium.org>
> Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#644624}

Bug: 918293
Change-Id: Ie1d3f99c7e8a854d33255a4d66243da2ce16441c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1539906
Reviewed-by: Victor Costan <pwnall@chromium.org>
Commit-Queue: Staphany Park <staphany@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644719}