Fix component build for indexed_db_quota_client_unittest.cc

Fix component build for indexed_db_quota_client_unittest.cc

This exports some functions used by tests to fix the following errors:

../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:115: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForHost(quota::StorageType, std::string const&, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:115: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForHost(quota::StorageType, std::string const&, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:115: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForHost(quota::StorageType, std::string const&, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:115: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForHost(quota::StorageType, std::string const&, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:101: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForType(quota::StorageType, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:101: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForType(quota::StorageType, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:101: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForType(quota::StorageType, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'
../../content/browser/indexed_db/indexed_db_quota_client_unittest.cc:101: error: undefined reference to 'content::IndexedDBQuotaClient::GetOriginsForType(quota::StorageType, base::Callback<void (std::set<GURL, std::less<GURL>, std::allocator<GURL> > const&)> const&)'

TBR=jsbell@chromium.org
BUG=none
TEST=ninja -C out/Release aura_builder

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266276

[spang, 2014-04-25 23:03:01]

The CQ bit was checked by spang@chromium.org

[spang, 2014-04-25 23:12:56]

Committed patchset #1 manually as r266276 (presubmit successful).