[Mac] Implement LocationBarViewMac::UpdateLocationBarVisibility()

chrome/browser/ui/cocoa/toolbar/toolbar_controller.h

Index: chrome/browser/ui/cocoa/toolbar/toolbar_controller.h
diff --git a/chrome/browser/ui/cocoa/toolbar/toolbar_controller.h b/chrome/browser/ui/cocoa/toolbar/toolbar_controller.h
index 1740e00d5c97f683a7d63ec7c4b1b2a923aa059e..02b58567fa98410e4bb0bbd05278a39d230aa439 100644
--- a/chrome/browser/ui/cocoa/toolbar/toolbar_controller.h
+++ b/chrome/browser/ui/cocoa/toolbar/toolbar_controller.h
@@ -82,10 +82,6 @@ class NotificationBridge;
   BOOL hasLocationBar_;  // If |hasToolbar_| is YES, this must also be YES.
   BOOL locationBarAtMinSize_; // If the location bar is at the minimum size.
 
-  // We have an extra retain in the locationBar_.
-  // See comments in awakeFromNib for more info.
-  base::scoped_nsobject<AutocompleteTextField> locationBarRetainer_;
-
   // Tracking area for mouse enter/exit/moved in the toolbar.
   ui::ScopedCrTrackingArea trackingArea_;
 
@@ -102,7 +98,8 @@ class NotificationBridge;
 // the toolbar model and back/forward menus.

[tapted, 2015/10/16 00:06:16]

nit: update comment here

[dominickn, 2015/10/20 04:40:21]

Done.

 - (id)initWithCommands:(CommandUpdater*)commands
                profile:(Profile*)profile
-               browser:(Browser*)browser;
+               browser:(Browser*)browser
+        resizeDelegate:(id<ViewResizer>)resizeDelegate;
 
 // Get the C++ bridge object representing the location bar for this tab.
 - (LocationBarViewMac*)locationBarBridge;
@@ -167,6 +164,14 @@ class NotificationBridge;
 // Create and add the Browser Action buttons to the toolbar view.
 - (void)createBrowserActionButtons;
 
+// Updates the visibility of the toolbar if the requested visibility differs
+// from the current visibility, with an optional animation.
+- (void)updateVisibility:(BOOL)visible withAnimation:(BOOL)animate;
+
+// Hide the back, forward, reload, home, and wrench buttons of the toolbar,
+// so that the location bar occupies the entire width.
+- (void)shouldHideToolbarButtons:(BOOL)hide;
+
 // Return the BrowserActionsController for this toolbar.
 - (BrowserActionsController*)browserActionsController;
 
@@ -186,6 +191,7 @@ class NotificationBridge;
 - (id)initWithCommands:(CommandUpdater*)commands
                profile:(Profile*)profile
                browser:(Browser*)browser
+        resizeDelegate:(id<ViewResizer>)resizeDelegate
           nibFileNamed:(NSString*)nibName;
 @end