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 3901e7d4203e376cec85d186bd6664cf7a5dae47..6f35b83c289db581df7f3aabafca3d9599513897 100644
--- a/content/public/test/test_browser_context.cc
+++ b/content/public/test/test_browser_context.cc
@@ -78,10 +78,12 @@ 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_;