Patch to try dump-on-DCHECK.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index ecf711f3c54a2aa734b0f3194b4e056a8cd08458..3086551ed01791466c6a5bb9f75c0ca6e33591f5 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -722,6 +722,15 @@
       'optimize_jni_generation%': 1,
 
       'conditions': [
+        # In Windows official builds, enable DCHECK as dump-without-crashing.
+        ['OS=="win" and buildtype=="Official"', {
+          'dcheck_always_on%': 1,
+          'dcheck_is_dump_without_crash': 1,
+        }, {
+          'dcheck_always_on%': 0,
+          'dcheck_is_dump_without_crash': 0,
+        }],
+
         # A flag for POSIX platforms
         ['OS=="win"', {
           'os_posix%': 0,
@@ -1193,6 +1202,7 @@
     'fastbuild%': '<(fastbuild)',
     'win_z7%': '<(win_z7)',
     'dcheck_always_on%': '<(dcheck_always_on)',
+    'dcheck_is_dump_without_crash%': '<(dcheck_is_dump_without_crash)',
     'tracing_like_official_build%': '<(tracing_like_official_build)',
     'fieldtrial_testing_like_official_build%': '<(fieldtrial_testing_like_official_build)',
     'arm_version%': '<(arm_version)',
@@ -2849,6 +2859,9 @@
       ['dcheck_always_on!=0', {
         'defines': ['DCHECK_ALWAYS_ON=1'],
       }],  # dcheck_always_on!=0
+      ['dcheck_is_dump_without_crash!=0', {
+        'defines': ['DCHECK_IS_DUMP_WITHOUT_CRASH=1'],
+      }],  # dcheck_is_dump_without_crash!=0
       ['tracing_like_official_build!=0', {
         'defines': ['TRACING_IS_OFFICIAL_BUILD=1'],
       }],  # tracing_like_official_build!=0