Change preprocessor directive to use && instead of and.

Because of MSVC error:
warning C4067: unexpected tokens following preprocessor directive - expected a newline

BUG=None

Change-Id: I31b0d19f797c5a5bc67ce6fe2cfb614725861fa3
Reviewed-on: https://chromium-review.googlesource.com/1162802Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Will Harris <wfh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590561}

chrome/test/data/webui/settings/cr_settings_browsertest.js

@@ -664,7 +664,7 @@ TEST_F('CrSettingsAppearanceFontsPageTest', 'All', function() {
   mocha.run();
 });
 
-GEN('#if defined(OS_WIN) and defined(GOOGLE_CHROME_BUILD)');
+GEN('#if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)');
 
 /**
  * @constructor