[Toolbar Mac UI] Simplify and correct omnibox pinning

chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h

Index: chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
diff --git a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
index d75d2f6e3e19b042a77a0cb6bdec2b2d9c0430c2..09ef7eef5d6ed2ff64c6dd4a6790a5d72be72d4e 100644
--- a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
+++ b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
@@ -46,9 +46,6 @@ class BrowserActionsContainerViewSizeDelegate {
   // drag.
   NSPoint initialDragPoint_;
 
-  // Used to cache the previous x-pos of the frame rect for resizing purposes.
-  CGFloat lastXPos_;
-
   // The maximum width the container could want; i.e., the width required to
   // display all the icons.
   CGFloat maxDesiredWidth_;
@@ -89,15 +86,9 @@ class BrowserActionsContainerViewSizeDelegate {
 // Sets whether or not tracking (for mouseEntered events) is enabled.
 - (void)setTrackingEnabled:(BOOL)enabled;
 
-// Resizes the container to the given ideal width, adjusting the |lastXPos_| so
-// that |resizeDeltaX| is accurate.
+// Resizes the container to the given ideal width, optionally animating.
 - (void)resizeToWidth:(CGFloat)width animate:(BOOL)animate;
 
-// Returns the change in the x-pos of the frame rect during resizing. Meant to
-// be queried when a NSViewFrameDidChangeNotification is fired to determine
-// placement of surrounding elements.
-- (CGFloat)resizeDeltaX;
-
 // Returns the frame of the container after the running animation has finished.
 // If no animation is running, returns the container's current frame.
 - (NSRect)animationEndFrame;