Fix wrong indentations and brace styles according to the style guide.

Review URL: https://codereview.chromium.org/189413009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256613 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256613
Removed the unnecessary TODO

There was a TODO to move the typedefs from input_method.h to ime_constants.h. As per the discussion on the previous patch set,removed the TODO and kept the typedefs in their original location.

This patch is for doing the same.

Review URL: https://codereview.chromium.org/194313003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256614 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256614