Revert "Add DevTools check to CrashKeys for crbug.com/824774."

This reverts commit b1d6f80a.

Reason for revert: https://crbug.com/827392

Original change's description:
> Add DevTools check to CrashKeys for crbug.com/824774.
> 
> Record whether DevTools is currently active in CrashKeys.
> 
> Bug: 824774
> Change-Id: I697bf892037c63216890d9d5f7ccc67e037f3b19
> Reviewed-on: https://chromium-review.googlesource.com/986453
> Commit-Queue: James MacLean <wjmaclean@chromium.org>
> Reviewed-by: Ken Buchanan <kenrb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#546929}

TBR=kenrb@chromium.org,wjmaclean@chromium.org

Change-Id: Id3f8c9b4810facf9cb0b7f15ad6699c691f2042c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 824774, 827392
Reviewed-on: https://chromium-review.googlesource.com/987172Reviewed-by: François Doray <fdoray@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547003}

content/browser/renderer_host/render_widget_host_input_event_router.cc

@@ -1192,22 +1192,11 @@ void RenderWidgetHostInputEventRouter::DispatchTouchscreenGestureEvent(
   event.SetPositionInWidget(event.PositionInWidget() +
                             touchscreen_gesture_target_.delta);
   // Temporary logging for https://crbug.com/824774.
-  // TODO(wjmaclean): Remove all this logging code once the issue is resolved.
   static auto* target_ptr_key = base::debug::AllocateCrashKeyString(
       "touchscreen-gesture-target-ptr", base::debug::CrashKeySize::Size64);
   base::debug::SetCrashKeyString(
       target_ptr_key,
       base::StringPrintf("%p", touchscreen_gesture_target_.target));
-  // Issue 824772 is a potential cause for issue 824774. Report whether
-  // devtools is in use to investigate this possibility.
-  auto* contents = root_view->host()->delegate()->GetAsWebContents();
-  const bool have_devtools =
-      contents && DevToolsAgentHost::IsDebuggerAttached(contents);
-  static auto* devtools_key = base::debug::AllocateCrashKeyString(
-      "touchscreen-gesture-target-have-devtools",
-      base::debug::CrashKeySize::Size32);
-  base::debug::SetCrashKeyString(devtools_key, std::to_string(have_devtools));
-  // Crash in 824774 appears to happen on next line.
   touchscreen_gesture_target_.target->ProcessGestureEvent(event, latency);
 }