Make Android Clipboard Keep Track of Last Modified Time
And expose it the C++ code.
To do in a later changelist: add lightweight code to store the hash and update time in prefs so that Chrome can have a better chance of using the current clipboard content on startup. (If the clipboard content hasn't changed since the last time Chrome ran, the last modified date is likely correct.)
BUG=682446
Review-Url: https://codereview.chromium.org/2766623003
Cr-Commit-Position: refs/heads/master@{#461234}
11 files changed
