Support autopresenting WebVr content.

chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
index d6e0e5303c3acda8786a8f74108e0cfa45a44167..31e60622eb19b56d0a0f81aeeb2797d2c3baad6f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java
@@ -794,6 +794,21 @@ public class IntentHandler {
         return false;
     }
 
+    /**
+     * @param intent An Intent to be checked.
+     * @param packageName The app where the intent is expected to originate from
+     * @return Whether the intent originates from the first-party app with the given package name.
+     */
+    public static boolean isIntentFromTrustedApp(Intent intent, String packageName) {
+        if (intent == null) return false;
+
+        PendingIntent token = fetchAuthenticationTokenFromIntent(intent);
+        if (token == null) return false;
+
+        return isIntentChromeOrFirstParty(intent)
+                && ApiCompatibilityUtils.getCreatorPackage(token).equals(packageName);
+    }
+
     @VisibleForTesting
     boolean isIntentUserVisible() {
         // Only process Intents if the screen is on and the device is unlocked;