Re-enable the post uninstall survey on Windows

Fixes brave/brave-browser#18063

Author: bsclifton

chromium_src/chrome/installer/setup/brave_behaviors.cc

@@ -11,10 +11,50 @@
 
 namespace installer {
 
+namespace {
+
+// This code is copied from `DoPostUninstallOperations` implementation in
+// `chrome/installer/setup/google_chrome_behaviors.cc` with the following
+// changes:
+//
+// - `distribution_data` not appended as Brave does not record histograms.
+// - `kBraveUninstallSurveyUrl` used instead of `kUninstallSurveyUrl`
+
+constexpr base::WStringPiece kBraveUninstallSurveyUrl(
+    L"https://brave.com/uninstall-survey?p=brave_uninstall_survey");
+
+}  // namespace
+
 void DoPostUninstallOperations(const base::Version& version,
                                const base::FilePath& local_data_path,
                                const std::wstring& distribution_data) {
-  // Brave browser doesn't launch uninstall survey page.
+  // Send the Chrome version and OS version as params to the form. It would be
+  // nice to send the locale, too, but I don't see an easy way to get that in
+  // the existing code. It's something we can add later, if needed. We depend
+  // on installed_version.GetString() not having spaces or other characters that
+  // need escaping: 0.2.13.4. Should that change, we will need to escape the
+  // string before using it in a URL.
+  const base::win::OSInfo* os_info = base::win::OSInfo::GetInstance();
+  base::win::OSInfo::VersionNumber version_number = os_info->version_number();
+  std::wstring os_version =
+      base::StringPrintf(L"%d.%d.%d", version_number.major,
+                         version_number.minor, version_number.build);
+
+  const std::wstring survey_url = std::wstring(kBraveUninstallSurveyUrl);
+#if DCHECK_IS_ON()
+  // The URL is expected to have a query part and not end with '&'.
+  const size_t pos = survey_url.find(L'?');
+  DCHECK_NE(pos, std::wstring::npos);
+  DCHECK_EQ(survey_url.find(L'?', pos + 1), std::wstring::npos);
+  DCHECK_NE(survey_url.back(), L'&');
+#endif
+  auto url = base::StringPrintf(L"%ls&crversion=%ls&os=%ls", survey_url.c_str(),
+                                base::ASCIIToWide(version.GetString()).c_str(),
+                                os_version.c_str());
+  if (os_info->version() < base::win::Version::WIN10 ||
+      !NavigateToUrlWithEdge(url)) {
+    NavigateToUrlWithIExplore(url);
+  }
 }
 
 }  // namespace installer