Show an infobar when VR services need to be installed or updated.

chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
index 51c48a4d820c67f250d8727f0a238473accb06ce..479497f48356fc24e3834c44735d0461536440c4 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java
@@ -11,6 +11,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Handler;
 import android.os.StrictMode;
@@ -26,13 +27,18 @@ import android.view.WindowManager;
 import android.widget.FrameLayout;
 
 import org.chromium.base.Log;
+import org.chromium.base.PackageUtils;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.library_loader.LibraryLoader;
+
+import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
+import org.chromium.chrome.browser.infobar.InfoBarIdentifier;
+import org.chromium.chrome.browser.infobar.SimpleConfirmInfoBarBuilder;
 import org.chromium.chrome.browser.multiwindow.MultiWindowUtils;
 import org.chromium.chrome.browser.tab.Tab;
 
@@ -77,6 +83,9 @@ public class VrShellDelegate {
     private static final String VR_ACTIVITY_ALIAS =
             "org.chromium.chrome.browser.VRChromeTabbedActivity";
 
+    private static final String VR_CORE_PACKAGE_ID = "com.google.vr.vrcore";
+    private static final int VR_CORE_MIN_VERSION = 160723800; // recent: 160722870,160723800

[Bernhard Bauer, 2017/02/16 12:12:51]

What does that comment mean?

[amp, 2017/02/16 18:41:35]

These were recent versions of the package.  I still need to verify which one is
the correct one to use, but thanks for reminding me to update this.

[amp, 2017/02/17 01:50:38]

Done.

+
     private static final long REENTER_VR_TIMEOUT_MS = 1000;
 
     private final ChromeTabbedActivity mActivity;
@@ -279,6 +288,38 @@ public class VrShellDelegate {
         if (!LibraryLoader.isInitialized()) {
             return false;
         }
+        // TODO(amp): Figure out how this works with isVrCoreCompatible check.
+        int vrCoreVersion = PackageUtils.getPackageVersion(mActivity, VR_CORE_PACKAGE_ID);
+        if (vrCoreVersion < VR_CORE_MIN_VERSION) {
+            // Assume upgrade as most comment case.
+            String actionText =
+                    mActivity.getString(R.string.vr_services_check_infobar_update_action);
+            if (vrCoreVersion == -1) {
+                // VrCore not installed, make sure it's supported first
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+                    // Not supported
+                    return false;
+                }
+                // Supported, but not installed.  Ask user to install instead of upgrade.
+                actionText = mActivity.getString(R.string.vr_services_check_infobar_install_action);
+            }
+            SimpleConfirmInfoBarBuilder.create(tab,
+                    new SimpleConfirmInfoBarBuilder.Listener() {
+                        @Override
+                        public void onInfoBarDismissed() {}
+
+                        @Override
+                        public boolean onInfoBarButtonClicked(boolean isPrimary) {
+                            mActivity.startActivity(new Intent(Intent.ACTION_VIEW,
+                                    Uri.parse("market://details?id=" + VR_CORE_PACKAGE_ID)));
+                            return false;
+                        }
+                    },
+                    InfoBarIdentifier.VR_SERVICES_UPGRADE, R.drawable.vr_services,
+                    mActivity.getString(R.string.vr_services_check_infobar_text, actionText),
+                    actionText, null, true);
+            return false;
+        }
         // If vr isn't in the build, or we haven't initialized yet, or vr shell is not enabled and
         // this is not a web vr request, then return immediately.
         if (mVrSupportLevel == VR_NOT_AVAILABLE || mNativeVrShellDelegate == 0