cc: Add raster tile priority queue construct perftest.

cc: Add raster tile priority queue construct perftest.

This patch adds a construct test for raster tile priority queue, as
well as fixes up (and slightly renames) the construct and iterate
perftest.

Initial runs from my linux desktop:
[ RUN      ] TileManagerPerfTest.RasterTileQueueConstructAndIterate
*RESULT tile_manager_raster_tile_queue_construct_and_iterate: 2_16= 107316.4609375 runs/s
*RESULT tile_manager_raster_tile_queue_construct_and_iterate: 2_32= 54775 runs/s
*RESULT tile_manager_raster_tile_queue_construct_and_iterate: 2_64= 26838 runs/s
*RESULT tile_manager_raster_tile_queue_construct_and_iterate: 2_128= 12552.615234375 runs/s
[       OK ] TileManagerPerfTest.RasterTileQueueConstructAndIterate (8234 ms)
[ RUN      ] TileManagerPerfTest.RasterTileQueueConstruct
*RESULT tile_manager_raster_tile_queue_construct: 2= 1589534.25 runs/s
*RESULT tile_manager_raster_tile_queue_construct: 10= 1521117.75 runs/s
*RESULT tile_manager_raster_tile_queue_construct: 100= 1029156.375 runs/s
[       OK ] TileManagerPerfTest.RasterTileQueueConstruct (8790 ms)

R=reveman

Review URL: https://codereview.chromium.org/392333007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285294 0039d316-1c4b-4281-b951-d872f2087c98