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

chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm

Index: chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm
diff --git a/chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm b/chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm
index b9624893d0708729235801e40498bafcddf5be36..395526f1266fd64c23c06eae5223f9b78cdee819 100644
--- a/chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm
+++ b/chrome/browser/ui/cocoa/tab_contents/web_drag_source.mm
@@ -7,6 +7,7 @@
 #include <sys/param.h>
 
 #include "base/file_path.h"
+#include "base/mac/crash_logging.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/task.h"
@@ -60,7 +61,7 @@ FilePath GetFileNameFromDragData(const WebDropData& drop_data) {
   // http://crbug.com/78782
   static NSString* const kUrlKey = @"drop_data_url";
   NSString* value = SysUTF8ToNSString(drop_data.url.spec());
-  ScopedCrashKey key(kUrlKey, value);
+  base::mac::ScopedCrashKey key(kUrlKey, value);
 
   // Images without ALT text will only have a file extension so we need to
   // synthesize one from the provided extension and URL.