Remove finch flag for play installation.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
index 1eeca2e601e30278d57a14003d2f70001d9f4101..3ca4a81dc52613c0a44094481c4d388412375046 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
@@ -58,10 +58,6 @@ public class ChromeWebApkHost {
 
     /** Computes the GooglePlayInstallState. */
     private static int computeGooglePlayInstallState() {
-        if (!isGooglePlayInstallEnabledByChromeFeature()) {
-            return GooglePlayInstallState.DISABLED_BY_VARIATIONS;
-        }
-
         if (!ExternalAuthUtils.getInstance().canUseGooglePlayServices(
                     ContextUtils.getApplicationContext(),
                     new UserRecoverableErrorHandler.Silent())) {
@@ -87,15 +83,6 @@ public class ChromeWebApkHost {
     }
 
     /**
-     * Returns whether Google Play install is enabled by Chrome. Does not check whether installing
-     * from Google Play is possible.
-     */
-    public static boolean isGooglePlayInstallEnabledByChromeFeature() {

[Xi Han, 2017/03/30 22:14:11]

You also need to update AppHooksImpl#getGooglePlayWebApkInstallDelegate() in
clank as a separate CL.

[Yaron, 2017/03/31 13:50:13]

Already did: https://chrome-internal-review.googlesource.com/#/c/341783/ :)

-        return isEnabled() && LibraryLoader.isInitialized()
-                && nativeCanUseGooglePlayToInstallWebApk();
-    }
-
-    /**
      * Returns whether installing WebAPKs is possible either from "unknown resources" or Google
      * Play.
      */
@@ -164,7 +151,6 @@ public class ChromeWebApkHost {
         }
     }
 
-    private static native boolean nativeCanUseGooglePlayToInstallWebApk();
     private static native boolean nativeCanLaunchRendererInWebApkProcess();
     private static native boolean nativeCanInstallFromUnknownSources();
 }