[Mac] Move ScopedSendingEvent from content/common/mac to base/mac.

chrome/browser/chrome_browser_application_mac.mm

Index: chrome/browser/chrome_browser_application_mac.mm
diff --git a/chrome/browser/chrome_browser_application_mac.mm b/chrome/browser/chrome_browser_application_mac.mm
index c219252d7ed9dcac0fb7387b19a16823498d63c0..282ecc3ddb2dcfa8e0c7a248098fa05c41149d0b 100644
--- a/chrome/browser/chrome_browser_application_mac.mm
+++ b/chrome/browser/chrome_browser_application_mac.mm
@@ -369,7 +369,7 @@ void SwizzleInit() {
 }
 
 - (void)sendEvent:(NSEvent*)event {
-  content::mac::ScopedSendingEvent sendingEventScoper;
+  base::mac::ScopedSendingEvent sendingEventScoper;

[Robert Sesek, 2011/11/29 22:41:56]

IWYU?

[Scott Hess - ex-Googler, 2011/11/29 23:22:58]

This class inherits from a class which implements the protocol which
ScopedSendingEvent depends on.  Still IWYU?  It would otherwise be reasonable to
use AutoReset to accomplish things (ScopedSendingEvent was originally
implemented co-resident with the superclass, so abstraction-wise it made sense
to be indirect).

   for (id<CrApplicationEventHookProtocol> handler in eventHooks_.get()) {
     [handler hookForEvent:event];
   }