bug:5062896
Added features to TileProfiler, updated jni interface to allow querying of
arbitrary log data via strings. Depends on the following webkit change:
https://android-git.corp.google.com/g/#change,122779
For new logging jni interface, and logging of invalidates.
Change-Id: I80ba6702b87e86ec76e5b0eafde45f4ef3a80ad3
Adds TileBenchmark app, which loads pages in webview and scrolls through them
automatically, measuring rendering and allocation information.
Change-Id: Ieaf5bbcec604c99aaf16822915e58bfc495011ec
