Cleanse mojo/services/gles2 of InterfaceImpl

Cleanse mojo/services/gles2 of InterfaceImpl

Now we use StrongBinding, which is the new hotness.

R=jamesr@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/9f3a2dd27b833570c554cb0e586267e6bda78ccb

[jamesr, 2014-11-18 05:24:20]

lgtm if you stick to InterfaceRequest<>.  It's move-only so you have to .Pass()
it a bit, but you get some type safety which is nicer than a 'raw'
ScopedMessagePipeHandle

https://codereview.chromium.org/734273002/diff/1/mojo/services/gles2/command_...
File mojo/services/gles2/command_buffer_impl.cc (right):

https://codereview.chromium.org/734273002/diff/1/mojo/services/gles2/command_...
mojo/services/gles2/command_buffer_impl.cc:63: : widget_(widget),
aside: this should use delegated c'tors now that those are allowed.

https://codereview.chromium.org/734273002/diff/1/mojo/services/gles2/command_...
File mojo/services/gles2/command_buffer_impl.h (right):

https://codereview.chromium.org/734273002/diff/1/mojo/services/gles2/command_...
mojo/services/gles2/command_buffer_impl.h:38:
CommandBufferImpl(ScopedMessagePipeHandle handle,
can these take InterfaceRequest<>s? you can bind those to StrongBinding<>s and
it's a bit type safer

[abarth-chromium, 2014-11-18 05:26:56]

Oh, neat.  Will do.

[abarth-chromium, 2014-11-18 06:24:47]

Committed patchset #2 (id:20001) manually as
9f3a2dd27b833570c554cb0e586267e6bda78ccb (presubmit successful).