Update WebView.postUrl documentation.
Update WebView.postUrl documentation.

Clarify format of the 'data' parameter.

Bug: 10188709
Change-Id: Ib0f7553153916ed7b5cc611da5eb481979bf3f93

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