Don't compare String8s to NULL.

Use String8::isEmpty instead. Note that this code path is hit
only if the zygote calls ::exit, and that never happens unless
the VM invocation fails.

Change-Id: I0e7d3a86a79b12b2174ca3bf0dbe1904e33c041a
Always call super.onCreate().  Always.

Bug 12991134

(cherrypick of commit 9d6376a1d88ab5b3a41ee4400e3aaa4c4ee69e2a)

Change-Id: Ife16ef93408253e3318a06dc0206ab4b88c7f367
Marquee text RTL improvements

Changed marquee text to scroll according to
the reading direction. Arabic text will
show the right edge and scroll towards
the left edge and vice versa for Latin.

Corrected marquee flicker when scroll animation
finished. The ghost scroll's x position was cast
to int and it made the text flicker when
marquee stops.

Ghost part didn't display for RTL languages.
Added multiplication with
getParagraphDirection to negate the ghost
offset.

Change-Id: I689039118df01a62f73ef0079c857fea1bfcc5a0
Mark constructor as accessible in LayoutInflater.

Needed to bypass new access checks for fields, methods, and
constructors.

Change-Id: I8ff0b44a6cb4f4af1c72734bca366d8b89528030