android: Actually compress traces written to zip files

BUG=294883
NOTRY=true

Review URL: https://codereview.chromium.org/27319002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228894 0039d316-1c4b-4281-b951-d872f2087c98
Update src list of ui/base/ime/ime.gypi

Somehow input_method_observer.h is not included in ui/base/ime/ime.gypi.
Although it is not harmful, we might want list it up to keep the consistency. 

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/27461002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228895 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228895