Don't compile code for desktop zoom or GuestViews on mobile platforms.

content/public/test/test_browser_context.cc

Index: content/public/test/test_browser_context.cc
diff --git a/content/public/test/test_browser_context.cc b/content/public/test/test_browser_context.cc
index 9b3055714dd1442cc25eb7c7cfbe71406df8783b..ddcefea9d08190e642bc6eb6914cdff5cb3a9133 100644
--- a/content/public/test/test_browser_context.cc
+++ b/content/public/test/test_browser_context.cc
@@ -79,10 +79,12 @@ base::FilePath TestBrowserContext::GetPath() const {
   return browser_context_dir_.GetPath();
 }
 
+#if !defined(OS_ANDROID)
 std::unique_ptr<ZoomLevelDelegate> TestBrowserContext::CreateZoomLevelDelegate(
     const base::FilePath& partition_path) {
   return std::unique_ptr<ZoomLevelDelegate>();
 }
+#endif  // !defined(OS_ANDROID)
 
 bool TestBrowserContext::IsOffTheRecord() const {
   return is_off_the_record_;