[Toolbar UI Mac] Fix omnibox minimum width

chrome/browser/ui/cocoa/extensions/browser_actions_container_view_unittest.mm

 // Copyright (c) 2011 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.
 
 #include "base/mac/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace {
 
 const CGFloat kContainerHeight = 15.0;
 const CGFloat kMinimumContainerWidth = 3.0;
+const CGFloat kMaxAllowedWidthForTest = 50.0;
+
+class BrowserActionsContainerTestDelegate
+    : public BrowserActionsContainerViewSizeDelegate {
+ public:
+  BrowserActionsContainerTestDelegate() {}
+  ~BrowserActionsContainerTestDelegate() override {}
+
+  CGFloat GetMaxAllowedWidth() override { return kMaxAllowedWidthForTest; }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainerTestDelegate);
+};
 
 class BrowserActionsContainerViewTest : public CocoaTest {
  public:
   void SetUp() override {
     CocoaTest::SetUp();
     view_.reset([[BrowserActionsContainerView alloc]
         initWithFrame:NSMakeRect(0, 0, 0, kContainerHeight)]);
   }
 
   base::scoped_nsobject<BrowserActionsContainerView> view_;
@@ skipping 32 matching lines @@
   // The container should be able to be resized while animating (simply taking
   // the newest target width).
   [view_ resizeToWidth:30.0 animate:YES];
   EXPECT_EQ(30.0, NSWidth([view_ animationEndFrame]));
 
   // Test with no animation again. The animationEndFrame should also reflect
   // the current frame, if no animation is pending.
   [view_ resizeToWidth:35.0 animate:NO];
   EXPECT_EQ(35.0, NSWidth([view_ frame]));
   EXPECT_EQ(35.0, NSWidth([view_ animationEndFrame]));
+
+  BrowserActionsContainerTestDelegate delegate;
+  [view_ setDelegate:&delegate];
+  [view_ resizeToWidth:kMaxAllowedWidthForTest + 10.0 animate:NO];
+  EXPECT_EQ(kMaxAllowedWidthForTest, NSWidth([view_ frame]));
+  [view_ setDelegate:nil];
 }
 
 }  // namespace