Add Google Play services info to chrome://version

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java
index a4cbeadbccbf6a4c32281c578340ab449942b116..efe413c03b9f68b907ad03ae08b29eaef4176834 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java
@@ -4,6 +4,18 @@
 
 package org.chromium.chrome.browser;
 
+import android.content.Context;
+import android.content.pm.PackageManager;
+
+import com.google.android.gms.common.GoogleApiAvailability;
+
+import org.chromium.base.ContextUtils;
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.chrome.browser.externalauth.ExternalAuthUtils;
+import org.chromium.chrome.browser.externalauth.UserRecoverableErrorHandler;
+
+import java.util.Locale;
+
 /**
  * A utility class for querying information about the current Chrome build.
  * Intentionally doesn't depend on native so that the data can be accessed before
@@ -66,4 +78,41 @@ public static String getProductVersion() {
     public static int getProductMajorVersion() {
         return ChromeVersionConstants.PRODUCT_MAJOR_VERSION;
     }
+
+    /**
+     * Returns info about the Google Play services setup for Chrome and the device.
+     *
+     * Contains the version number of the SDK Chrome was built with and the one for the installed
+     * Play Services app. It also contains whether First Party APIs are available.
+     */
+    @CalledByNative
+    public static String getGmsInfo() {
+        Context context = ContextUtils.getApplicationContext();
+
+        final long sdkVersion = GoogleApiAvailability.GOOGLE_PLAY_SERVICES_VERSION_CODE;
+        final long installedGmsVersion = getPlayServicesApkVersionNumber(context);
+
+        final String accessType;
+        UserRecoverableErrorHandler handler = new UserRecoverableErrorHandler.Silent();
+        if (ExternalAuthUtils.getInstance().canUseFirstPartyGooglePlayServices(context, handler)) {
+            accessType = "1p";
+        } else if (ExternalAuthUtils.getInstance().canUseGooglePlayServices(context, handler)) {
+            accessType = "3p";
+        } else {
+            accessType = "none";
+        }
+
+        return String.format(Locale.US,
+                "SDK=%s; Installed=%s; Access=%s", sdkVersion, installedGmsVersion, accessType);
+    }
+
+    private static long getPlayServicesApkVersionNumber(Context context) {
+        try {
+            return context.getPackageManager()
+                    .getPackageInfo(GoogleApiAvailability.GOOGLE_PLAY_SERVICES_PACKAGE, 0)
+                    .versionCode;
+        } catch (PackageManager.NameNotFoundException e) {
+            return 0;
+        }
+    }
 }