Add WebViewDatabaseAdapter#{get,set}HttpAuthUsernamePassword

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java

Index: android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
diff --git a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
index 4a3892673442c2b9ec08979ddb21ba8d4649b45a..e15fd8456b529e291a3080a1d95aa8023b906232 100644
--- a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
+++ b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
@@ -361,7 +361,7 @@ class WebViewChromium implements WebViewProvider, WebViewProvider.ScrollDelegate
         // This is a deprecated API: intentional no-op.
     }
 
-    @Override
+    // TODO(ntfschr): remove these functions once API 25 and below is not supported

[hush (inactive), 2016/09/26 17:29:20]

I believe you can actually just remove this TODO, and add back @Override.
It will be a very very long time before API 25 is not supported (probably never)
We should, in principle, support all Android versions. 

     public void setHttpAuthUsernamePassword(
             final String host, final String realm, final String username, final String password) {
         if (checkNeedsPost()) {
@@ -373,10 +373,11 @@ class WebViewChromium implements WebViewProvider, WebViewProvider.ScrollDelegate
             });
             return;
         }
-        mAwContents.setHttpAuthUsernamePassword(host, realm, username, password);
+        ((WebViewDatabaseAdapter) mFactory.getWebViewDatabase(mContext))
+                .setHttpAuthUsernamePassword(host, realm, username, password);
     }
 
-    @Override
+    // TODO(ntfschr): remove these functions once API 25 and below is not supported

[hush (inactive), 2016/09/26 17:29:20]

same comment as above.

     public String[] getHttpAuthUsernamePassword(final String host, final String realm) {
         mFactory.startYourEngines(true);
         if (checkNeedsPost()) {
@@ -388,7 +389,8 @@ class WebViewChromium implements WebViewProvider, WebViewProvider.ScrollDelegate
             });
             return ret;
         }
-        return mAwContents.getHttpAuthUsernamePassword(host, realm);
+        return ((WebViewDatabaseAdapter) mFactory.getWebViewDatabase(mContext))
+                .getHttpAuthUsernamePassword(host, realm);
     }
 
     @Override