Telemetry / Android: uses prebuilt forwarder and md5sum utilities.

Makes it simpler to run without building anything.

BUG=

Review URL: https://codereview.chromium.org/25523002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230083 0039d316-1c4b-4281-b951-d872f2087c98
Files.app: Implement the conflict confirm dialog box.

When the file operation is conflicted, we are planning to ask users which option
to be preferred. This CL adds a user interface to ask the question for users.

BUG=250045
TEST=manually

Review URL: https://codereview.chromium.org/29073003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230084 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230083
SVN changes up to revision 230084