than GPU limitation

On some old or lowend hardwares, such as Pixel 1 (ChromeBook), the max texture
their GPUs can process may smaller than a combination of several high resolution
monitors. In this situation, GPU decoder will fail, and we will render a blank
white screen. So this change adds a check of max texture size GPU (from OpenGL
layer) supports. And if a desktop image is larger than this limitation,
PepperVideoRenderer3D will fall back to PepperVideoRenderer2D to render
following images.

BUG=584388

Review-Url: https://chromiumcodereview.appspot.com/2150833002
Cr-Commit-Position: refs/heads/master@{#426019}