Enable crash reports (via Reporting API) by default.

Intent to ship:
https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/ryK8SHcBzZw/2cjTF_OCBwAJ

Bug: 898860
Change-Id: I25325827f7432dc141ae8cfe0d50e587a8f32664
Reviewed-on: https://chromium-review.googlesource.com/c/1320205
Commit-Queue: Avi Drissman <avi@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Rick Byers <rbyers@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607401}

content/public/common/content_features.cc

@@ -119,7 +119,7 @@ const base::Feature kCompositeOpaqueScrollers{"CompositeOpaqueScrollers",
 // Enables crash reporting via Reporting API.
 // https://www.w3.org/TR/reporting/#crash-report
 const base::Feature kCrashReporting{"CrashReporting",
-                                    base::FEATURE_DISABLED_BY_DEFAULT};
+                                    base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables specification of a target element in the fragment identifier
 // via a CSS selector.