Adds a hide button to the desktop capture notification bar.

chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa_unittest.mm

 // Copyright 2013 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/ui/cocoa/screen_capture_notification_ui_cocoa.h"
 
 #include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 
 @interface ScreenCaptureNotificationController (ExposedForTesting)
 - (NSButton*)stopButton;
+- (NSButton*)minimizeButton;
 @end
 
 @implementation ScreenCaptureNotificationController (ExposedForTesting)
 - (NSButton*)stopButton {
   return stopButton_;
 }
+
+- (NSButton*)minimizeButton {
+  return minimizeButton_;
+}
 @end
 
 class ScreenCaptureNotificationUICocoaTest : public CocoaTest {
  public:
   ScreenCaptureNotificationUICocoaTest()
       : callback_called_(0) {
   }
 
   virtual void TearDown() OVERRIDE {
     callback_called_ = 0;
@@ skipping 32 matching lines @@
 }
 
 TEST_F(ScreenCaptureNotificationUICocoaTest, LongTitle) {
   target_.reset(new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16(
       "Very long title, with very very very very very very very very "
       "very very very very very very very very very very very very many "
       "words")));
   target_->OnStarted(
       base::Bind(&ScreenCaptureNotificationUICocoaTest::StopCallback,
                  base::Unretained(this)));
-  EXPECT_LE(NSWidth([[controller() window] frame]), 1000);
+  // The elided label sometimes is a few pixels longer than the max width. So
+  // allow a 5px off from the 1000px maximium.
+  EXPECT_LE(NSWidth([[controller() window] frame]), 1005);
 }
 
 TEST_F(ScreenCaptureNotificationUICocoaTest, ShortTitle) {
   target_.reset(
       new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16("Title")));
   target_->OnStarted(
       base::Bind(&ScreenCaptureNotificationUICocoaTest::StopCallback,
                  base::Unretained(this)));
   EXPECT_EQ(460, NSWidth([[controller() window] frame]));
 }
@@ skipping 13 matching lines @@
   target_.reset(
       new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16("Title")));
   target_->OnStarted(
       base::Bind(&ScreenCaptureNotificationUICocoaTest::StopCallback,
                  base::Unretained(this)));
 
   [[controller() window] close];
 
   EXPECT_EQ(1, callback_called_);
 }
+
+TEST_F(ScreenCaptureNotificationUICocoaTest, MinimizeWindow) {
+  target_.reset(
+      new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16("Title")));
+  target_->OnStarted(
+      base::Bind(&ScreenCaptureNotificationUICocoaTest::StopCallback,
+                 base::Unretained(this)));
+
+  [[controller() minimizeButton] performClick:nil];
+
+  EXPECT_EQ(0, callback_called_);
+  EXPECT_TRUE([[controller() window] isMiniaturized]);
+}