Remove hard-coded DrawSelectorOnTop on ListFragment's default ListView.

When using the default layout of a ListFragment, the
returned ListView has its DrawSelectorOnTop property
hard-coded to false.
There is no reason for this, as this property is themable.
This change removes the hard-coded attribute.

Change-Id: Idc90fd04680c19d3731b30d84764858a28783864
Signed-off-by: Benoit Lubek <bodlulu@gmail.com>
Don't unnecessarily set LayoutParams on children

Setting LayoutParams on children triggers requestLayout
which can be expensive and result in significantly lower
framerate for children layouts that don't need it. When
requestLayout method is invoked the needToMeasure boolean
will be true, this is what we'd like to avoid unless
it is actually needed.

BUG: https://code.google.com/p/android/issues/detail?id=72733

Change-Id: Id5d8f3431b5f943b1279eae41ee43d32a99514fc
Signed-off-by: Jacob Abrams <satur9nine@gmail.com>
Optimize drawBitmapMesh using TRIANGLE_STRIP

Draw BitmapMesh using STRIP instead of TRIANGLES.
Depending on where the bottleneck is located in the pipeline,
there is a potential for saving two-thirds of the time spent rendering.
The speedup is due to avoiding redundant operations,
i.e., mapping each vertex four times to texture and color attribute,
sending each vertex twice to the GPU, vertex processing of GPU ...

In this patch:
1. Refactoring mesh using Strip.
2. Batch triangles by adding degenerate triangles.
3. Optimize computing positions of texture and color attribute.

Benchmark: Drawing Bitmap(1152x768 px) with 200x200 meshes
Performance is doubled (from 26.4 fps to 53 fps, Nexus10).
Memory footprint: only 17% of original method.
(from 240000 to 40401 vertices with xy, uv, rgba data.)

Change-Id: I08c5c20d981d88528ce7b02012feefae468d6ec4
Signed-off-by: kui.zheng <kui.zheng@arm.com>