Rename a header so that it has the .h suffix

input_predictor_unittest.cc is used purely as a header file so
it should have the .h suffix. Now it looks like some .cc files
are trying to include another .cc file.

The class was too large to have an implicit inline
constructor/destructor so those remain in a cc file. This presubmit
check didn't work before because the file was named *.cc.

Change-Id: I67740f4181ea60d02cd3149ce57b0d4e8c36aaf2
Reviewed-on: https://chromium-review.googlesource.com/1255638
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#595838}
7 files changed