Add crash key for non-CORS-safelisted header names send by 1p apps

Bug: 873178
Change-Id: I696313dd80fb0801d951ff6c6e0c50661f84a63a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2000599Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731685}

chrome/browser/android/headers_classifier.cc

@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 #include "base/android/jni_string.h"
+#include "base/debug/crash_logging.h"
+#include "base/debug/dump_without_crashing.h"
 #include "base/hash/hash.h"
 #include "base/metrics/histogram_functions.h"
 #include "base/strings/string_util.h"
@@ -26,9 +28,17 @@ jboolean JNI_IntentHeadersRecorder_IsCorsSafelistedHeader(
     return true;
 
   if (is_first_party) {
-    base::UmaHistogramSparse(
-        "Android.IntentNonSafelistedHeaderNames",
-        base::PersistentHash(base::ToLowerASCII(header_name)));
+    int hash = base::PersistentHash(base::ToLowerASCII(header_name));
+    base::UmaHistogramSparse("Android.IntentNonSafelistedHeaderNames", hash);
+    if (hash == -240302231) {
+      static base::debug::CrashKeyString* non_safelisted_header_name =
+          base::debug::AllocateCrashKeyString(
+              "intent_non_safelisted_header_name",
+              base::debug::CrashKeySize::Size256);
+      base::debug::ScopedCrashKeyString(non_safelisted_header_name,
+                                        header_name);
+      base::debug::DumpWithoutCrashing();
+    }
   }
 
   return false;