Disable renderer CIG by default.

This is causing crashes on some configurations and needs investigation.

BUG=750886,990640

Change-Id: Idfdd06b219a95bed854cce9048860692ded011b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1736106
Commit-Queue: Will Harris <wfh@chromium.org>
Commit-Queue: James Forshaw <forshaw@chromium.org>
Reviewed-by: James Forshaw <forshaw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683904}

chrome/browser/chrome_content_browser_client.cc

@@ -725,7 +725,7 @@ const char* const kPredefinedAllowedSocketOrigins[] = {
 // running on Windows 10 1511 and above. See
 // https://blogs.windows.com/blog/tag/code-integrity-guard/.
 const base::Feature kRendererCodeIntegrity{"RendererCodeIntegrity",
-                                           base::FEATURE_ENABLED_BY_DEFAULT};
+                                           base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_WIN) && !defined(COMPONENT_BUILD)
 
 enum AppLoadedInTabSource {