Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/ff7f1749d10b1fce53591cae122639cf17848e53 (Enable mojo input messages on all platforms other than Android webview.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2760614ef85f57db3ee1ffdefe50d4321b41f75b

commit 2760614ef85f57db3ee1ffdefe50d4321b41f75b
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Thu Nov 30 21:11:19 2017

Fix clusterfuzz crash on MojoInputMessages

The callsites were updated in
https://chromium-review.googlesource.com/c/chromium/src/+/793971 however
I left the DCHECK still in and didn't allow nullptr as the return value.
This caused the clusterfuzz failures.

BUG= 789926 , 789906 

Change-Id: I950f4ea72225faa0f9be3afbe022e0152079aa92
Reviewed-on: https://chromium-review.googlesource.com/801637
Reviewed-by: Mustaq Ahmed <mustaq@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#520685}
[modify] https://crrev.com/2760614ef85f57db3ee1ffdefe50d4321b41f75b/content/renderer/input/widget_input_handler_manager.cc

ClusterFuzz has detected this issue as fixed in range 520684:520685.

Detailed report: https://clusterfuzz.com/testcase?key=5584371456409600

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  content::RenderWidget::OnDidOverscroll
  content::RenderWidgetInputHandler::DidOverscrollFromBlink
  blink::ChromeClientImpl::DidOverscroll
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=519995:519996
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=520684:520685

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5584371456409600

See https://github.com/google/clusterfuzz-tools 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 5584371456409600 is verified as fixed, so closing issue as verified.

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