Make ChromeExtensionChooserDialog::ShowDialog work for MacViews

chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm

 // Copyright 2016 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/chooser_content_view.h"
+#import "chrome/browser/ui/cocoa/chooser_content_view_cocoa.h"
 
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_button.h"
 #include "chrome/grit/generated_resources.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMUILocalizerAndLayoutTweaker.h"
 #import "ui/base/cocoa/controls/hyperlink_button_cell.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
 namespace {
 
@@ skipping 13 matching lines @@
 const CGFloat kVerticalPadding = 10.0f;
 
 // Separator alpha value.
 const CGFloat kSeparatorAlphaValue = 0.6f;
 
 // Separator height.
 const CGFloat kSeparatorHeight = 1.0f;
 
 }  // namespace
 
-@implementation ChooserContentView
+@implementation ChooserContentViewCocoa
 
 - (instancetype)initWithChooserTitle:(NSString*)chooserTitle {
   // ------------------------------------
   // | Chooser title                    |
   // | -------------------------------- |
   // | | option 0                     | |
   // | | option 1                     | |
   // | | option 2                     | |
   // | |                              | |
   // | |                              | |
@@ skipping 193 matching lines @@
 
 - (NSButton*)cancelButton {
   return cancelButton_.get();
 }
 
 - (NSButton*)helpButton {
   return helpButton_.get();
 }
 
 @end