Add compiler flags that prevent text relocations.

Text relocations are a minor security risk. Add compiler flags
that prevent them from reappearing in Android binary.
All existing occurences have been removed after
http://crrev.com/17714003.

TEST=Compile.
BUG=b/8061013

Review URL: https://chromiumcodereview.appspot.com/17820002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209885 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed