Do not install WebAPKs with web manifests with invalid URL components

chrome/browser/android/banners/app_banner_manager_android.cc

Index: chrome/browser/android/banners/app_banner_manager_android.cc
diff --git a/chrome/browser/android/banners/app_banner_manager_android.cc b/chrome/browser/android/banners/app_banner_manager_android.cc
index b25d564d663b6d50cfd32691a46bfdb8d2285565..0b81d91e34cdfcce7e6948fddf88c9837a1b6ccb 100644
--- a/chrome/browser/android/banners/app_banner_manager_android.cc
+++ b/chrome/browser/android/banners/app_banner_manager_android.cc
@@ -12,6 +12,8 @@
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/android/banners/app_banner_infobar_delegate_android.h"
 #include "chrome/browser/android/shortcut_helper.h"
+#include "chrome/browser/android/webapk/chrome_webapk_host.h"
+#include "chrome/browser/android/webapk/webapk_web_manifest_checker.h"
 #include "chrome/browser/banners/app_banner_metrics.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/manifest/manifest_icon_downloader.h"
@@ -154,6 +156,16 @@ void AppBannerManagerAndroid::PerformInstallableCheck() {
     Stop();
   }
 
+  if (ChromeWebApkHost::AreWebApkEnabled()) {
+    InstallableStatusCode error_code =
+        CheckWebManifestUrlsWebApkCompatible(manifest_);
+    if (error_code != NO_ERROR_DETECTED) {
+      ReportStatus(web_contents(), error_code);

[dominickn, 2016/08/24 03:27:11]

When CheckWebManifestUrlsWebApkCompatible returns a boolean, you can inline the
error code in ReportStatus(web_contents(), URL_NOT_SUPPORTED_FOR_WEBAPK);

+      Stop();
+      return;
+    }
+  }
+
   // No native app banner was requested. Continue checking for a web app banner.
   AppBannerManager::PerformInstallableCheck();
 }