[Mac] Move event hooks from CrApplication to BrowserCrApplication.

chrome/browser/chrome_browser_application_mac.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/chrome_browser_application_mac.h"
 
 #import "base/logging.h"
 #include "base/mac/crash_logging.h"
 #import "base/mac/scoped_nsexception_enabler.h"
 #import "base/metrics/histogram.h"
@@ skipping 197 matching lines @@
 @implementation BrowserCrApplication
 
 + (void)initialize {
   // Turn all deallocated Objective-C objects into zombies, keeping
   // the most recent 10,000 of them on the treadmill.
   ObjcEvilDoers::ZombieEnable(true, 10000);
 }
 
 - (id)init {
   SwizzleInit();
-  return [super init];
+  if ((self = [super init])) {
+    eventHooks_.reset([[NSMutableArray alloc] init]);
+  }
+  return self;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // HISTORICAL COMMENT (by viettrungluu, from
 // http://codereview.chromium.org/1520006 with mild editing):
 //
 // A quick summary of the state of things (before the changes to shutdown):
 //
 // Currently, we are totally hosed (put in a bad state in which Cmd-W does the
 // wrong thing, and which will probably eventually lead to a crash) if we begin
@@ skipping 121 matching lines @@
     enableNSExceptions = true;
   }
 
   // Minimize the window by keeping this close to the super call.
   scoped_ptr<base::mac::ScopedNSExceptionEnabler> enabler(NULL);
   if (enableNSExceptions)
     enabler.reset(new base::mac::ScopedNSExceptionEnabler());
   return [super sendAction:anAction to:aTarget from:sender];
 }
 
+- (void)addEventHook:(id<CrApplicationEventHookProtocol>)handler {
+  [eventHooks_ addObject:handler];
+}
+
+- (void)removeEventHook:(id<CrApplicationEventHookProtocol>)handler {
+  [eventHooks_ removeObject:handler];
+}
+
+- (void)sendEvent:(NSEvent*)event {
+  content::mac::ScopedSendingEvent sendingEventScoper;
+  for (id<CrApplicationEventHookProtocol> handler in eventHooks_.get()) {
+    [handler hookForEvent:event];
+  }
+  [super sendEvent:event];
+}
+
 // NSExceptions which are caught by the event loop are logged here.
 // NSException uses setjmp/longjmp, which can be very bad for C++, so
 // we attempt to track and report them.
 - (void)reportException:(NSException *)anException {
   // If we throw an exception in this code, we can create an infinite
   // loop.  If we throw out of the if() without resetting
   // |reportException|, we'll stop reporting exceptions for this run.
   static BOOL reportingException = NO;
   DCHECK(!reportingException);
   if (!reportingException) {
@@ skipping 59 matching lines @@
         if (RenderViewHost* rvh = contents->render_view_host()) {
           rvh->EnableRendererAccessibility();
         }
       }
     }
   }
   return [super accessibilitySetValue:value forAttribute:attribute];
 }
 
 @end