chrome/installer: Make InitializeCrashReporting() return a scoped_ptr.

The idea came first while I found this code was using google_breakpad's
scoped_ptr version rather than base's version.

Then I saw in win8/ that this function could return a scoped_ptr to make
it clear the ownership to caller, i.e., this function passes the
ownership of ExceptionHandler to the caller, so it should own the
pointer to release it when it is done.

BUG=None
TEST=None
R=grt@chromium.org

Review URL: https://codereview.chromium.org/160283002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250957 0039d316-1c4b-4281-b951-d872f2087c98

chrome/installer/setup/setup_main.cc

@@ -18,6 +18,7 @@
 #include "base/file_version_info.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
 #include "base/strings/string16.h"
@@ -1278,16 +1279,16 @@ google_breakpad::CustomClientInfo* GetCustomInfo(const wchar_t* exe_path) {
 
 // Initialize crash reporting for this process. This involves connecting to
 // breakpad, etc.
-google_breakpad::ExceptionHandler* InitializeCrashReporting(
+scoped_ptr<google_breakpad::ExceptionHandler> InitializeCrashReporting(
     bool system_install) {
   // Only report crashes if the user allows it.
   if (!GoogleUpdateSettings::GetCollectStatsConsent())
-    return NULL;
+    return scoped_ptr<google_breakpad::ExceptionHandler>();
 
   // Get the alternate dump directory. We use the temp path.
   base::FilePath temp_directory;
   if (!base::GetTempDir(&temp_directory) || temp_directory.empty())
-    return NULL;
+    return scoped_ptr<google_breakpad::ExceptionHandler>();
 
   wchar_t exe_path[MAX_PATH * 2] = {0};
   GetModuleFileName(NULL, exe_path, arraysize(exe_path));
@@ -1299,19 +1300,18 @@ google_breakpad::ExceptionHandler* InitializeCrashReporting(
 
   if (!system_install) {
     if (!base::win::GetUserSidString(&user_sid)) {
-      return NULL;
+      return scoped_ptr<google_breakpad::ExceptionHandler>();
     }
   }
 
   base::string16 pipe_name = kGoogleUpdatePipeName;
   pipe_name += user_sid;
 
-  google_breakpad::ExceptionHandler* breakpad =
+  return scoped_ptr<google_breakpad::ExceptionHandler>(
       new google_breakpad::ExceptionHandler(
           temp_directory.value(), NULL, NULL, NULL,
           google_breakpad::ExceptionHandler::HANDLER_ALL, kLargerDumpType,
-          pipe_name.c_str(), GetCustomInfo(exe_path));
-  return breakpad;
+          pipe_name.c_str(), GetCustomInfo(exe_path)));
 }
 
 // Uninstalls multi-install Chrome Frame if the current operation is a
@@ -1695,7 +1695,7 @@ int WINAPI wWinMain(HINSTANCE instance, HINSTANCE prev_instance,
   prefs.GetBool(installer::master_preferences::kSystemLevel, &system_install);
   VLOG(1) << "system install is " << system_install;
 
-  google_breakpad::scoped_ptr<google_breakpad::ExceptionHandler> breakpad(
+  scoped_ptr<google_breakpad::ExceptionHandler> breakpad(
       InitializeCrashReporting(system_install));
 
   InstallationState original_state;