Indicate in the Window menu which Chrome window has an active sound playing

chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm b/chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm
index 3ff2a87e7ab82e045b73aa449793fb8b8415642f..5b3b6a37eeae02f9a924ddd54741f9b99457abcb 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa_unittest.mm
@@ -11,11 +11,13 @@
 #import "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #include "chrome/browser/ui/cocoa/cocoa_profile_test.h"
+#include "chrome/grit/generated_resources.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_details.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #import "third_party/ocmock/gtest_support.h"
+#include "ui/base/l10n/l10n_util_mac.h"
 
 // Main test class.
 class BrowserWindowCocoaTest : public CocoaProfileTest {
@@ -48,6 +50,28 @@ TEST_F(BrowserWindowCocoaTest, TestBookmarkBarVisible) {
   EXPECT_EQ(before, bwc->IsBookmarkBarVisible());
 }
 
+TEST_F(BrowserWindowCocoaTest, TestWindowTitle) {
+  scoped_ptr<BrowserWindowCocoa> bwc(
+      new BrowserWindowCocoa(browser(), controller_));
+  NSString* playing_emoji = bwc->media_playing_emoji();
+  NSString* muting_emoji = bwc->media_muting_emoji();
+  EXPECT_EQ([bwc->WindowTitle() rangeOfString:playing_emoji].location,
+            NSNotFound);
+  EXPECT_EQ([bwc->WindowTitle() rangeOfString:muting_emoji].location,
+            NSNotFound);
+  bwc->UpdateMediaState(TAB_MEDIA_STATE_AUDIO_PLAYING);
+  EXPECT_NE([bwc->WindowTitle() rangeOfString:playing_emoji].location,
+            NSNotFound);
+  bwc->UpdateMediaState(TAB_MEDIA_STATE_AUDIO_MUTING);
+  EXPECT_NE([bwc->WindowTitle() rangeOfString:muting_emoji].location,
+            NSNotFound);
+  bwc->UpdateMediaState(TAB_MEDIA_STATE_NONE);
+  EXPECT_EQ([bwc->WindowTitle() rangeOfString:playing_emoji].location,
+            NSNotFound);
+  EXPECT_EQ([bwc->WindowTitle() rangeOfString:muting_emoji].location,
+            NSNotFound);
+}
+
 // Test that IsMaximized() returns false when the browser window goes from
 // maximized to minimized state - http://crbug/452976.
 TEST_F(BrowserWindowCocoaTest, TestMinimizeState) {