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This relaxes the requirements for tiled draw quads that can bypass a RenderPass.
Previously, the content quad had to have an identity transform and fill the
RenderPass's layer.

With this change, the geometry and transform constraints go away, and the RPDQ
params struct is updated to remember the additional transform that has to be
applied to draw the content correctly. The base transform and the new transform
are kept separate because the image filters of the render pass have to be
processed in the base transform's coordinate space. However, we also don't want
to just draw the base geometry with the content quad's textures because the
texture coordinates may not map to a gfx::Rect anymore. Storing separate transforms
cleanly handles both of these challenges.

Bug: 1013735
Change-Id: I0a05d2aa318238dae093899c697fac6a84e5c261
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1860302
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: weiliangc <weiliangc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708787}