Refactor Mac crash key reporting - move to base/mac/crash_logging.{h,mm}

content/common/sandbox_mac.mm

Index: content/common/sandbox_mac.mm
diff --git a/content/common/sandbox_mac.mm b/content/common/sandbox_mac.mm
index 5ee1bc509029b9225056bd9c4db1a9601e8e9ab6..d9e64d917cf9075ed1fe51d9e602252a9d2c74f3 100644
--- a/content/common/sandbox_mac.mm
+++ b/content/common/sandbox_mac.mm
@@ -16,6 +16,7 @@ extern "C" {
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
+#include "base/mac/crash_logging.h"
 #include "base/mac/mac_util.h"
 #include "base/rand_util_c.h"
 #include "base/mac/scoped_cftyperef.h"
@@ -559,6 +560,10 @@ bool Sandbox::EnableSandbox(SandboxProcessType sandbox_type,
 void Sandbox::GetCanonicalSandboxPath(FilePath* path) {
   int fd = HANDLE_EINTR(open(path->value().c_str(), O_RDONLY));
   if (fd < 0) {
+    base::mac::SetCrashKeyValue(
+        @"errno", [NSString stringWithFormat:@"%d", errno]);
+    base::mac::SetCrashKeyValue(@"homedir", NSHomeDirectory());
+
     PLOG(FATAL) << "GetCanonicalSandboxPath() failed for: "
                 << path->value();
     return;