Added an integration test for kasko hang reports

chrome/chrome_watcher/chrome_watcher_main_api.h

Index: chrome/chrome_watcher/chrome_watcher_main_api.h
diff --git a/chrome/chrome_watcher/chrome_watcher_main_api.h b/chrome/chrome_watcher/chrome_watcher_main_api.h
index d2f129b4a93a4ffd6055b8138259f961459b417a..b8aa962e578387a0da0aad7794cc19bb10d4e451 100644
--- a/chrome/chrome_watcher/chrome_watcher_main_api.h
+++ b/chrome/chrome_watcher/chrome_watcher_main_api.h
@@ -20,21 +20,19 @@ extern const base::FilePath::CharType kPermanentlyFailedReportsSubdir[];
 
 // The type of the watcher DLL's main entry point.
 // Watches |parent_process|, whose main thread ID is |main_thread_id|, and
-// records its exit code under |registry_path| in HKCU. A window named
-// |message_window_name|, owned by |parent_process|, will be monitored for
-// responsiveness. If SyzyASAN is enabled, a Kasko reporter process is also
-// instantiated, using |browser_data_directory| to store crash reports.
-// |on_initialized_event| will be signaled once the watcher process is fully
-// initialized. Takes ownership of |parent_process| and |on_initialized_event|.
-// |channel_name| is the current Chrome distribution channel (one of
-// installer::kChromeChannelXXX).
+// records its exit code under |registry_path| in HKCU. The Chrome message
+// window, owned by |parent_process|, will be monitored for responsiveness. If
+// enabled, a Kasko reporter process is also instantiated, using
+// |browser_data_directory| to store crash reports. |on_initialized_event| will
+// be signaled once the watcher process is fully initialized. Takes ownership of
+// |parent_process| and |on_initialized_event|. |channel_name| is the current
+// Chrome distribution channel (one of installer::kChromeChannelXXX).
 typedef int (*ChromeWatcherMainFunction)(
     const base::char16* registry_path,
     HANDLE parent_process,
     DWORD main_thread_id,
     HANDLE on_initialized_event,
     const base::char16* browser_data_directory,
-    const base::char16* message_window_name,
     const base::char16* channel_name);
 
 // Returns an RPC endpoint name for the identified client process. This method