Revert of Reland: Mojo C++ bindings: replace '::' with '.' in the interface name. (patchset #2 id:20001 of https://codereview.chromium.org/1782543004/ )

Reason for revert:
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Android%20Tests%20%28dbg%29/builds/33342

Original issue's description:
> Reland: Mojo C++ bindings: replace '::' with '.' in the interface name.
>
> Previously the |foo::Bar::Name_| field was "foo::Bar". With this change it
> becomes "foo.Bar".
>
> Using C++-style namespace in the name doesn't makes too much sense because the
> name should remain the same across different languages.
>
> The original CL was https://codereview.chromium.org/1778793004/
>
> BUG=None
> TBR=ben@chromium.org
>
> Committed: https://crrev.com/a061a917ebc0d16fb67d2644d93bfdca7eec92d3
> Cr-Commit-Position: refs/heads/master@{#380459}

TBR=ben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Review URL: https://codereview.chromium.org/1785803003

Cr-Commit-Position: refs/heads/master@{#380503}
7 files changed