Change OOMs to raise custom exception rather than breakpoint on Windows.

base/process/memory.h

Index: base/process/memory.h
diff --git a/base/process/memory.h b/base/process/memory.h
index be669dd847606bc743af75768837644a1841ee2a..8f5fe38b8847596cead8af4745c3cba3c37bd2db 100644
--- a/base/process/memory.h
+++ b/base/process/memory.h
@@ -48,6 +48,14 @@ const int kMaxOomScore = 1000;
 BASE_EXPORT bool AdjustOOMScore(ProcessId process, int score);
 #endif
 
+#if defined(OS_WIN)
+namespace win {
+
+const DWORD kOomExceptionCode = 0xE0000008;

[Mark Mentovai, 2016/07/19 20:32:08]

A quick comment on how this is expected to be used, how it was chosen to avoid
colliding with real Windows-defined exception values and exit codes, etc.?

[Will Harris, 2016/07/19 21:35:32]

Done.

+
+}  // namespace win
+#endif
+
 // Special allocator functions for callers that want to check for OOM.
 // These will not abort if the allocation fails even if
 // EnableTerminationOnOutOfMemory has been called.