Revert "Fix for Concurrency issue reported in  525529"

This reverts commit 7f3f3cc90b8a4d1416eb4c06a404842b13a6124b.
Use highp precision for scaled coordination

If scaled coordination is closer to zero than what
the medium precision can store, distance becomes
zero and it causes divided by zero.

Change-Id: I8ee921dd1f57564a442e685266b12d95fc08e165
NetworkPolicy: Validate policy templates before updating

Ensure all the policies to be added are validated, otherwise
this service will throw IllegalArgumentException and cause
system crash when updating network template after receiving
ACTION_NETWORK_STATS_UPDATED.

Change-Id: I3faef0ac2a2fcea64ba5dde9c9256f6714280e2e
CRs-Fixed: 561490
WifiState: Don't aquire transitionwakelock in airplane mode

NetworkTransitionWakelock is for transition from Wifi to mobile.
It will cause device no sleep for 60s. There is no need to acquire
it in airplane mode.

Change-Id: I1487dc4787948d09e482f22e88d01768b54964da
fb: fix reconstruct statusbar illegal argument exception

Finally I got a logcat what is happening in rare cases. If the reconstruct
happens during a notification ticker was send it returns a negative
width value for the static layout and systemUI crashes.

E/AndroidRuntime(  970): java.lang.IllegalArgumentException: Layout: -23 < 0
E/AndroidRuntime(  970):        at android.text.Layout.<init>(Layout.java:138)
E/AndroidRuntime(  970):        at android.text.StaticLayout.<init>(StaticLayout.java:104)
E/AndroidRuntime(  970):        at android.text.StaticLayout.<init>(StaticLayout.java:90)
E/AndroidRuntime(  970):        at android.text.StaticLayout.<init>(StaticLayout.java:68)
E/AndroidRuntime(  970):        at android.text.StaticLayout.<init>(StaticLayout.java:48)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.phone.Ticker$Segment.getLayout(Ticker.java:72)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.phone.Ticker$Segment.getText(Ticker.java:91)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.phone.Ticker.addEntry(Ticker.java:226)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.phone.PhoneStatusBar.tick(PhoneStatusBar.java:2862)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.phone.PhoneStatusBar.addNotification(PhoneStatusBar.java:1432)
E/AndroidRuntime(  970):        at com.android.systemui.statusbar.CommandQueue$H.handleMessage(CommandQueue.java:322)

to avoid this check before a new StaticLayout is constructed if the width is < 0 and if this
is the case abort the operation. This is in this case a legit way due that the notification
gets reconstructed during this process later so or so

Change-Id: I6ed68bbb9226101d3573f3d76deb793ddae69627