cherrypick Change-Id: I60c74919ab3df359f47e5052bcc1469318a5b821 add notice about large screen devices and the "mobile" string in user agent
cherrypick Change-Id: I60c74919ab3df359f47e5052bcc1469318a5b821
add notice about large screen devices and the "mobile" string in user agent

Change-Id: I2e6a3f2c4fced2cf06bb996c1135c042682cdf8f

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base