Hide VR Intent Dispatcher from Android Default Browser list.

The Android platform's Default Browser code has a bug where it allows
the same package to show up multiple times despite not being able to
differentiate between the multiple components within the package that
caused it to detect multiple browsers within the package.

We can trick it into thinking the VR intent handling code isn't default
browser material by providing a wildcard host, making Android think
the intent handler uses a URI authority when it really doesn't.

Bug: 847921
Change-Id: I2b271fc1c99495a0e80e301ff432690dd5a2d0a6
Reviewed-on: https://chromium-review.googlesource.com/1079261Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574281}

chrome/android/java/AndroidManifest.xml

@@ -434,10 +434,14 @@ by a child template that "extends" this file.
 
             <intent-filter android:priority="-1">
                 <category android:name="com.google.intent.category.DAYDREAM" />
+                <!-- Trick Android into thinking this intent filter contains data authorities, and
+                     so cannot serve as the default browser. crbug.com/847921 -->
+                <data android:host="*" />
                 {{ self.common_view_intent_shared_filter_body() }}
             </intent-filter>
             <intent-filter android:priority="-1">
                 <category android:name="com.google.intent.category.DAYDREAM" />
+                <data android:host="*" />
                 {{ self.common_view_intent_shared_filter_with_mime_body() }}
             </intent-filter>
             <intent-filter android:priority="-1">

chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java

@@ -777,7 +777,7 @@ public class ExternalNavigationHandler {
             return false;
         }
         return ExternalNavigationDelegateImpl
-                       .getSpecializedHandlersWithFilter(handlers, appId, null)
+                       .getSpecializedHandlersWithFilter(handlers, appId, intent)
                        .size()
                 > 0;
     }

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappTabDelegate.java

@@ -83,7 +83,7 @@ public class WebappTabDelegate extends TabDelegate {
             boolean foundSpecializedHandler = false;
 
             for (String result : ExternalNavigationDelegateImpl.getSpecializedHandlersWithFilter(
-                         handlers, null, null)) {
+                         handlers, null, intent)) {
                 if (result.equals(mApkPackageName)) {
                     // Current webapk matches, don't intercept so that we can launch a cct. See
                     // http://crbug.com/831806 for more context.