Capitalize "Cocoa" in c/b/ui/cocoa/extensions/.

chrome/browser/ui/cocoa/extensions/browser_action_button.mm

 // Copyright (c) 2012 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/ui/cocoa/extensions/browser_action_button.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
@@ skipping 366 matching lines @@
     [self setImage:image.ToNSImage()];
 
   [self setEnabled:viewController_->IsEnabled(webContents)];
 
   [self setNeedsDisplay:YES];
 }
 
 - (void)onRemoved {
   // The button is being removed from the toolbar, and the backing controller
   // will also be removed. Destroy the delegate.
-  // We only need to do this because in cocoa's memory management, removing the
+  // We only need to do this because in Cocoa's memory management, removing the
   // button from the toolbar doesn't synchronously dealloc it.
   viewControllerDelegate_.reset();
 }
 
 - (BOOL)isAnimating {
   return [moveAnimation_ isAnimating];
 }
 
 - (NSRect)frameAfterAnimation {
   if ([moveAnimation_ isAnimating]) {
@@ skipping 100 matching lines @@
 - (ui::ThemeProvider*)themeProviderForWindow:(NSWindow*)window {
   ui::ThemeProvider* themeProvider = [window themeProvider];
   if (!themeProvider)
     themeProvider =
         [[browserActionsController_ browser]->window()->GetNativeWindow()
             themeProvider];
   return themeProvider;
 }
 
 @end