Move ownership of gpu texture resources to ResourcePool

This makes allocation of resources in OneCopyRasterBufferProvider
and GpuRasterBufferProvider happen directly instead of through
a ResourceProvider lock, and stores ownership of the resources in the
ResourcePool. For each RasterBufferProvider,
a) When AcquireBufferForRaster is called it creates the GpuBacking
and ensures the sync token is waited on if present, and creates a texture
and mailbox.
b) After playback on the worker, a sync token is created.
c) When the RasterBuffer is destroyed, back on the compositor thread,
it stores that sync token into the GpuBacking.

R=sunnyps@chromium.org, vmpstr@chromium.org

Bug: 730660, 738190
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: Ide0005262435cc4a0925766761221dc8852f0026
Reviewed-on: https://chromium-review.googlesource.com/895806
Commit-Queue: danakj <danakj@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535741}

• cc/raster/gpu_raster_buffer_provider.cc[diff]
• cc/raster/gpu_raster_buffer_provider.h[diff]
• cc/raster/one_copy_raster_buffer_provider.cc[diff]
• cc/raster/one_copy_raster_buffer_provider.h[diff]
• cc/raster/raster_buffer_provider_perftest.cc[diff]
• cc/raster/raster_buffer_provider_unittest.cc[diff]
• cc/raster/zero_copy_raster_buffer_provider.cc[diff]
• cc/resources/layer_tree_resource_provider.cc[diff]
• cc/resources/layer_tree_resource_provider.h[diff]
• cc/resources/resource_pool.cc[diff]
• cc/resources/resource_pool.h[diff]
• cc/resources/resource_pool_unittest.cc[diff]
• cc/test/fake_raster_buffer_provider.cc[diff]
• cc/test/layer_tree_pixel_resource_test.cc[diff]
• cc/tiles/tile_manager.h[diff]
• cc/trees/layer_tree_host_impl.cc[diff]
• cc/trees/layer_tree_host_unittest.cc[diff]
• components/viz/common/BUILD.gn[diff]
• components/viz/common/gpu/texture_allocation.cc[Added - diff]
• components/viz/common/gpu/texture_allocation.h[Added - diff]
• components/viz/common/resources/resource_format_utils.cc[diff]
• components/viz/common/resources/resource_format_utils.h[diff]