[Mac] Allow vibrancy & transparency on WebContentsView

content/browser/renderer_host/render_widget_host_view_mac.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <IOSurface/IOSurfaceAPI.h>
 #include <list>
@@ skipping 50 matching lines @@
     : BaseView <RenderWidgetHostViewMacBase,
                 RenderWidgetHostViewMacOwner,
                 NSTextInputClient> {
  @private
   scoped_ptr<content::RenderWidgetHostViewMac> renderWidgetHostView_;
   // This ivar is the cocoa delegate of the NSResponder.
   base::scoped_nsobject<NSObject<RenderWidgetHostViewMacDelegate>>
       responderDelegate_;
   BOOL canBeKeyView_;
   BOOL closeOnDeactivate_;
+  BOOL opaque_;
   scoped_ptr<content::RenderWidgetHostViewMacEditCommandHelper>
       editCommand_helper_;
 
   // These are part of the magic tooltip code from WebKit's WebHTMLView:
   id trackingRectOwner_;              // (not retained)
   void* trackingRectUserData_;
   NSTrackingRectTag lastToolTipTag_;
   base::scoped_nsobject<NSString> toolTip_;
 
   // Is YES if there was a mouse-down as yet unbalanced with a mouse-up.
@@ skipping 77 matching lines @@
   // key up events yet.
   // Used for filtering out non-matching NSKeyUp events.
   std::set<unsigned short> keyDownCodes_;
 }
 
 @property(nonatomic, readonly) NSRange selectedRange;
 @property(nonatomic, readonly) BOOL suppressNextEscapeKeyUp;
 
 - (void)setCanBeKeyView:(BOOL)can;
 - (void)setCloseOnDeactivate:(BOOL)b;
+- (void)setOpaque:(BOOL)opaque;
 - (void)setToolTipAtMousePoint:(NSString *)string;
 // True for always-on-top special windows (e.g. Balloons and Panels).
 - (BOOL)acceptsMouseEventsWhenInactive;
 // Cancel ongoing composition (abandon the marked text).
 - (void)cancelComposition;
 // Confirm ongoing composition.
 - (void)confirmComposition;
 // Enables or disables plugin IME.
 - (void)setPluginImeActive:(BOOL)active;
 // Updates the current plugin focus state.
@@ skipping 374 matching lines @@
 
   // Factory used to safely scope delayed calls to ShutdownHost().
   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_