Remove dependency of //content/renderer on gles2_implementation.h.

Detected using `gn check`, which complains that the target doesn't depend
on :gles2_implementation. It seems reasonable to have //content/renderer
depend only on the interface header.

* Add PPB_Graphics3D_Shared::gles2_interface, which returns a pointer to
  the interface (since one would need gles2_implementation.h to know that
  it is derived from GLES2Implementation), for use in PPB_Graphics3D_Impl.

* video_decoder_shim.cc no longer has GL_UNPACK_ROW_LENGTH defined without
  the implementation header. This should be written to GLES2, so it should
  use GL_UNPACK_ROW_LENGTH_EXT from gl2ext.h.

* Include ordering is fixed in video_decoder_shim.cc, and base/logging.h
  is made unconditional (since it is needed for DCHECK, which is used
  outside preprocessor guards).

Review URL: https://codereview.chromium.org/1543943003

Cr-Commit-Position: refs/heads/master@{#367394}

0 files changed, 0 insertions, 0 deletions