Revert "Complete the plumbing of CanvasResource through CanvasResourceDispatcher"

This reverts commit e61ec2a12b1144082f76f37144250a4d4dd6bf18.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 576882 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtL2U2MWVjMmExMmIxMTQ0MDgyZjc2ZjM3MTQ0MjUwYTRkNGRkNmJmMTgM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.memory/Linux%20MSan%20Tests/10896

Sample Failed Step: network_service_content_browsertests

Original change's description:
> Complete the plumbing of CanvasResource through CanvasResourceDispatcher
> 
> This CL completes the the last link of plumbing allowing CanvasResource
> objects of any type to be pushed all the way through to the compositor.
> 
> BUG=788439
> TBR=fserb@chromium.org
> 
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_layout_tests_slimming_paint_v2;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I08c9775b0e62e5dd7fd3a9cb73d0b6dba0e43ccc
> Reviewed-on: https://chromium-review.googlesource.com/1144602
> Commit-Queue: Justin Novosad <junov@chromium.org>
> Reviewed-by: Justin Novosad <junov@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#576882}

No-Presubmit: true
No-Tree-Checks: true
No-Try: true
BUG=788439
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_layout_tests_slimming_paint_v2;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel

Change-Id: I42ef501b5c4b1e11e2de9a0524241f72f4ea54fa
Reviewed-on: https://chromium-review.googlesource.com/1145202
Cr-Commit-Position: refs/heads/master@{#577013}
8 files changed