Fix typo in ppapi/shared_impl/README.txt

BUG=none
TEST=none
NOTRY=true

Review URL: https://codereview.chromium.org/158873008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250140 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250140
android envsetup: Stop exporting ANDROID_TOOLCHAIN.

build/common.gypi already sets <(android_toolchain) independently of this
env var, and nothing seems to really depend on the env var.
(tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py uses it
to print a better error message if it's available, but that doesn't seem
important.)

BUG=330631
R=torne@chromium.org

Review URL: https://codereview.chromium.org/146723004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250141 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250141