Use MacViews for ContentSettingBubbles.

chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm

Index: chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm b/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm
index 194bed68d3b4d1bac49b43708b19a2d7da7002a7..6cc564c72e69eaed939c6fc36a474c7f5db1c6f5 100644
--- a/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm
+++ b/chrome/browser/ui/cocoa/location_bar/content_setting_decoration.mm
@@ -12,6 +12,7 @@
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
+#include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/content_settings/content_setting_bubble_cocoa.h"
 #include "chrome/browser/ui/cocoa/last_active_browser_cocoa.h"
@@ -24,6 +25,7 @@
 #include "ui/base/cocoa/appkit_utils.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
+#include "ui/gfx/mac/coordinate_conversion.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
 
 using content::WebContents;
@@ -275,10 +277,21 @@ bool ContentSettingDecoration::OnMousePressed(NSRect frame, NSPoint location) {
           browser->content_setting_bubble_model_delegate(),
           web_contents,
           profile_);
-  [ContentSettingBubbleController showForModel:model
-                                   webContents:web_contents
-                                  parentWindow:[field window]
-                                    anchoredAt:anchor];
+
+  if (chrome::ToolkitViewsDialogsEnabled()) {
+    // Construct the contents with no anchor view; instead this function uses
+    // |SetExplicitAnchorRect| below to give it an anchor rect directly.

[tapted, 2016/01/11 02:50:58]

nit: this comment feels better above the line that calls  `new
ContentSettingBubbleContents`

+    gfx::Point origin = gfx::ScreenPointFromNSPoint(anchor);
+    bubble_bridge_.reset(new ContentSettingBubbleBridge(
+        model, web_contents, origin));
+    bubble_bridge_->Show();
+  } else {
+    [ContentSettingBubbleController showForModel:model
+                                     webContents:web_contents
+                                    parentWindow:[field window]
+                                      anchoredAt:anchor];
+  }
+
   return true;
 }