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Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/a210e801d2389b72e762a446be8651700a71b330 (Cluster fuzz RasterDecoder).

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The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/390ffc84a086f23d502097da14fea80a68c1b795

commit 390ffc84a086f23d502097da14fea80a68c1b795
Author: Jonathan Backer <backer@chromium.org>
Date: Mon Jun 04 17:57:20 2018

Fix clusterfuzz bugs

We were hitting DCHECKS on bad user input. This is the wrong thing to do
with input from an untrusted client. This CL validates the user input
and sets a local GL error instead.

1) glTexStorage2D does not support compressed formats, so fail for ETC1

2) often cannot handle more than 1 level, so return an error instead of
   DCHECK

3) only call Texture::SetImmutable if a level was successfully defined

Bug:  844295 ,  844296 ,  844293 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I0db5de0508c555b50bb0f3eb379aa5d5bfdd4cc6
Reviewed-on: https://chromium-review.googlesource.com/1071711
Commit-Queue: Jonathan Backer <backer@chromium.org>
Reviewed-by: Victor Miura <vmiura@chromium.org>
Cr-Commit-Position: refs/heads/master@{#564149}
[modify] https://crrev.com/390ffc84a086f23d502097da14fea80a68c1b795/gpu/command_buffer/service/raster_decoder.cc
[modify] https://crrev.com/390ffc84a086f23d502097da14fea80a68c1b795/gpu/command_buffer/service/raster_decoder_unittest.cc
[modify] https://crrev.com/390ffc84a086f23d502097da14fea80a68c1b795/gpu/command_buffer/service/raster_decoder_unittest_base.cc

ClusterFuzz has detected this issue as fixed in range 564134:564157.

Detailed report: https://clusterfuzz.com/testcase?key=5397922150350848

Fuzzer: libFuzzer_gpu_raster_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  false in resource_format_utils.cc
  viz::TextureStorageFormat
  gpu::raster::RasterDecoderImpl::TexStorage2D
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=559059:559067
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=564134:564157

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5397922150350848

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5397922150350848 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.