[Merge M51] aw: Use functor released callback for lifetime management

[Merge M51] aw: Use functor released callback for lifetime management

This is a smaller CL for merging to m51 branch. Has similar caveats to
r386831 so not restating them here.

This CL does these things:
* Expose the new callback from android on the callDrawGlFunction
  function.
* Use the callback only as a strong reference to keep view
  CleanupReferences alive. The actual callback is a no-op for now.
* AwGLFunctor will always hold a the NativeGLDelegate and ContainerView
  This is important in case destroy comes after detach.
* AwContents.DestroyRunnable only holds the DestroyRunnable of
  AwGLFunctor instead of AwGLFunctor itself to prevent GC leaks.

BUG=597167
TBR=tobiasjs@chromium.org

Review URL: https://codereview.chromium.org/1890343003

Cr-Commit-Position: refs/heads/master@{#387926}
(cherry picked from commit c748c90944d0a21be20b4a0d8844e51bc828f659)

Committed: https://chromium.googlesource.com/chromium/src/+/74af09d91fec7a5d27e3d7def6805414b0a16a81

[boliu, 2016-04-20 01:58:58]

Description was changed from

==========
[Merge M51] aw: Use functor released callback for lifetime management

This is a smaller CL for merging to m51 branch. Has similar caveats to
r386831 so not restating them here.

This CL does these things:
* Expose the new callback from android on the callDrawGlFunction
  function.
* Use the callback only as a strong reference to keep view
  CleanupReferences alive. The actual callback is a no-op for now.
* AwGLFunctor will always hold a the NativeGLDelegate and ContainerView
  This is important in case destroy comes after detach.
* AwContents.DestroyRunnable only holds the DestroyRunnable of
  AwGLFunctor instead of AwGLFunctor itself to prevent GC leaks.

BUG=597167
TBR=tobiasjs@chromium.org

Review URL: https://codereview.chromium.org/1890343003

Cr-Commit-Position: refs/heads/master@{#387926}
(cherry picked from commit c748c90944d0a21be20b4a0d8844e51bc828f659)
==========

to

==========
[Merge M51] aw: Use functor released callback for lifetime management

This is a smaller CL for merging to m51 branch. Has similar caveats to
r386831 so not restating them here.

This CL does these things:
* Expose the new callback from android on the callDrawGlFunction
  function.
* Use the callback only as a strong reference to keep view
  CleanupReferences alive. The actual callback is a no-op for now.
* AwGLFunctor will always hold a the NativeGLDelegate and ContainerView
  This is important in case destroy comes after detach.
* AwContents.DestroyRunnable only holds the DestroyRunnable of
  AwGLFunctor instead of AwGLFunctor itself to prevent GC leaks.

BUG=597167
TBR=tobiasjs@chromium.org

Review URL: https://codereview.chromium.org/1890343003

Cr-Commit-Position: refs/heads/master@{#387926}
(cherry picked from commit c748c90944d0a21be20b4a0d8844e51bc828f659)

Committed:
https://chromium.googlesource.com/chromium/src/+/74af09d91fec7a5d27e3d7def680...
==========

[boliu, 2016-04-20 01:59:00]

Committed patchset #1 (id:1) manually as
74af09d91fec7a5d27e3d7def6805414b0a16a81.