Replace most BrowserList::empty() and BrowserList::size() calls by multi-desktop aware calls.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc
index 66f2f6674d452147d86587fd13bdc551d5046ec5..08c2bb77aff9c604b68386268f7de506dbd82271 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_app_unittest.cc
@@ -21,6 +21,7 @@
 #include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
 #include "chrome/browser/ui/ash/launcher/launcher_item_controller.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/extensions/extension.h"
@@ -310,7 +311,7 @@ void CheckMenuCreation(ChromeLauncherControllerPerApp* controller,
 
 // Check that browsers get reflected correctly in the launcher menu.
 TEST_F(ChromeLauncherControllerPerAppTest, BrowserMenuGeneration) {
-  EXPECT_EQ(1U, BrowserList::size());
+  EXPECT_EQ(1U, chrome::GetTotalBrowserCount());
   chrome::NewTab(browser());
 
   ChromeLauncherControllerPerApp launcher_controller(profile(), &model_);
@@ -352,7 +353,7 @@ TEST_F(ChromeLauncherControllerPerAppTest, BrowserMenuGeneration) {
 // Note that the extension matching logic is tested by the extension system
 // and does not need a separate test here.
 TEST_F(ChromeLauncherControllerPerAppTest, V1AppMenuGeneration) {
-  EXPECT_EQ(1U, BrowserList::size());
+  EXPECT_EQ(1U, chrome::GetTotalBrowserCount());
   EXPECT_EQ(0, browser()->tab_strip_model()->count());
   chrome::NewTab(browser());
   BrowserList::SetLastActive(browser());