Alternate NTP: Don't hide bookmark bar on instant

chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h

Index: chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h
diff --git a/chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h b/chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h
index f08bd55237021565b44a6d87979df9c235ce4154..a40053b7f03b8d3d38d6734b120a49992a0dec3d 100644
--- a/chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h
+++ b/chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h
@@ -51,11 +51,26 @@ class WebContents;
 
   // View responsible for drawing a drop shadow.
   scoped_nsobject<NSView> dropShadowView_;
+
+  BrowserWindowController* windowController_;
+
+  // The vertical offset between the top of the view and the preview contents.
+  // This is used to push the preview contents below the bookmark bar. Normally
+  // this is 0 so that the preview contents obscures the bookmark bar.
+  CGFloat previewOffset_;
+
+  // The vertical offset between the top of the view and the active container.
+  // This is used to push the active container below the bookmark bar. Normally
+  // this is set to the height of the bookmark bar so that the bookmark bar is
+  // not obscured.
+  CGFloat activeContainerOffset_;
 }
 
 @property(readonly, nonatomic) NSView* activeContainer;
 @property(readonly, nonatomic) NSView* dropShadowView;
 @property(readonly, nonatomic) BOOL drawDropShadow;
+@property(assign, nonatomic) CGFloat previewOffset;
+@property(assign, nonatomic) CGFloat activeContainerOffset;
 
 // Initialization.
 - (id)initWithBrowser:(Browser*)browser
@@ -75,6 +90,9 @@ class WebContents;
 // if it's the preview being activated (and adjust internal state accordingly).
 - (void)onActivateTabWithContents:(content::WebContents*)contents;
 
+// Returns YES if the preview contents is currently showing.
+- (BOOL)isShowingPreview;
+
 - (InstantPreviewControllerMac*)instantPreviewController;
 
 @end