Define the --enable-crash-reporting flag on all platforms.

base/base_switches.h

Index: base/base_switches.h
diff --git a/base/base_switches.h b/base/base_switches.h
index 7686e76316ec04f37982643710c9de320359f4c1..1d8a8a892cf1bac83397ba65520c591185b1cc04 100644
--- a/base/base_switches.h
+++ b/base/base_switches.h
@@ -13,6 +13,7 @@ namespace switches {
 
 extern const char kDebugOnStart[];
 extern const char kDisableBreakpad[];
+extern const char kEnableCrashReporter[];
 extern const char kEnableDCHECK[];
 extern const char kFullMemoryCrashReport[];
 extern const char kNoErrorDialogs[];
@@ -22,10 +23,6 @@ extern const char kVModule[];
 extern const char kWaitForDebugger[];
 extern const char kTraceToConsole[];
 
-#if defined(OS_POSIX)
-extern const char kEnableCrashReporter[];
-#endif
-
 }  // namespace switches
 
 #endif  // BASE_BASE_SWITCHES_H_