Change DumpProcessWithoutCrash to use load-time dynamic linking

base/debug/dump_without_crashing.cc

Index: base/debug/dump_without_crashing.cc
diff --git a/base/debug/dump_without_crashing.cc b/base/debug/dump_without_crashing.cc
index 4b338ca2930b69d110fd545176029aec75f9cd4a..c9ab4558056eda0e8a95d595e2f15cb2e4d5c355 100644
--- a/base/debug/dump_without_crashing.cc
+++ b/base/debug/dump_without_crashing.cc
@@ -27,6 +27,7 @@ bool DumpWithoutCrashing() {
 }
 
 void SetDumpWithoutCrashingFunction(void (CDECL *function)()) {
+  DCHECK(!dump_without_crashing_function_);

[Will Harris, 2017/06/26 12:26:20]

this actually broke in component builds because they all share the same base.dll
- so I added a preprocessor exception for component builds. Surprised this
didn't hit on any of the bots.

   dump_without_crashing_function_ = function;
 }