Re-land fixes memory leaks.

Using a custom array instead of std::vector speeds up the resource
manager. One reason is because calls to size() are implemented in many
implementations as a difference between two pointers. This sub size
implementations are slower than storing a simple size variable in a
custom class.

Also includes more inlining of hot spots functions.

Also includes a small unit test class for ResourceMap. And an unrelated
but small test fix for TextureLimisTest. Also a small unrelated fix for
a Transform Feedback test.

Increase the scores of the draw call perf test with texture and buffer
bindings and the buffer binding perf test.

Bug: angleproject:2763
Change-Id: Ic2f0f689107b2bf05c63da2ed6bbc9f0feea63f7
Reviewed-on: https://chromium-review.googlesource.com/1229033Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>