Ignore viewport viewScale in fixed viewport mode.
Ignore viewport viewScale in fixed viewport mode.

This is to solve macworld.com, which has 900 as viewport but actual
content width is more 1000.

issue: 3003933
Change-Id: I2db3f66828fd00c8be62131599395eb82752b4a2

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