[Mac] Do not take Browser Actions Container view changes into account in inco...

chrome/browser/cocoa/toolbar_controller.mm

 // Copyright (c) 2010 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.
 
 #import "chrome/browser/cocoa/toolbar_controller.h"
 
 #include <algorithm>
 
 #include "app/l10n_util_mac.h"
 #include "base/mac_util.h"
@@ skipping 574 matching lines @@
 - (void)prefChanged:(std::wstring*)prefName {
   if (!prefName) return;
   if (*prefName == prefs::kShowHomeButton) {
     [self showOptionalHomeButton];
   } else if (*prefName == prefs::kShowPageOptionsButtons) {
     [self showOptionalPageWrenchButtons];
   }
 }
 
 - (void)createBrowserActionButtons {
-  if (browserActionsController_.get() == nil) {
+  if (!browserActionsController_.get()) {
     browserActionsController_.reset([[BrowserActionsController alloc]
             initWithBrowser:browser_
               containerView:browserActionsContainerView_]);
     [[NSNotificationCenter defaultCenter]
         addObserver:self
            selector:@selector(browserActionsContainerDragged)
                name:kBrowserActionGrippyDraggingNotification
              object:browserActionsController_];
     [[NSNotificationCenter defaultCenter]
         addObserver:self
@@ skipping 49 matching lines @@
 - (void)maintainMinimumLocationBarWidth {
   CGFloat locationBarWidth = NSWidth([locationBar_ frame]);
   locationBarAtMinSize_ = locationBarWidth <= kMinimumLocationBarWidth;
   if (locationBarAtMinSize_) {
     CGFloat dX = kMinimumLocationBarWidth - locationBarWidth;
     [self adjustLocationAndGoPositionsBy:dX];
   }
 }
 
 - (void)toolbarFrameChanged {
+  // Do nothing if the frame changes but no Browser Action Controller is
+  // present.
+  if (!browserActionsController_.get())
+    return;
+
   [self maintainMinimumLocationBarWidth];
 
   if (locationBarAtMinSize_) {
     // Once the grippy is pinned, leave it until it is explicity un-pinned.
     [browserActionsContainerView_ setGrippyPinned:YES];
     NSRect containerFrame = [browserActionsContainerView_ frame];
     // Determine how much the container needs to move in case it's overlapping
     // with the location bar.
     CGFloat dX = ([goButton_ frame].origin.x + NSWidth([goButton_ frame])) -
         containerFrame.origin.x + kBrowserActionsContainerLeftPadding;
@@ skipping 164 matching lines @@
 - (void)indicateDropURLsInView:(NSView*)view at:(NSPoint)point {
   // Do nothing.
 }
 
 // (URLDropTargetController protocol)
 - (void)hideDropURLsIndicatorInView:(NSView*)view {
   // Do nothing.
 }
 
 @end