Check whether it has the permission to read files when running ImeTest

content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java

Index: content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
diff --git a/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
index 7a53c32b96b6a0d19e243d5af318f8e660b71567..f10d7fd58ccd26521d6995e14f9f447376a3acde 100644
--- a/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
+++ b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
@@ -4,13 +4,16 @@
 
 package org.chromium.content.browser.input;
 
+import android.Manifest;
 import android.app.Activity;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.Process;
 import android.test.suitebuilder.annotation.MediumTest;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.text.InputType;
@@ -22,6 +25,7 @@ import android.view.inputmethod.BaseInputConnection;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
 
+import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.DisabledTest;
@@ -84,6 +88,7 @@ public class ImeTest extends ContentShellTestBase {
     public void setUp() throws Exception {
         super.setUp();
         startActivityWithTestUrl(INPUT_FORM_HTML);
+        assertHaveFileReadPermission();
         mContentViewCore = getContentViewCore();
         mWebContents = getWebContents();
 
@@ -1556,6 +1561,21 @@ public class ImeTest extends ContentShellTestBase {
                 });
     }
 
+    private void assertHaveFileReadPermission() throws InterruptedException {
+        CriteriaHelper.pollInstrumentationThread(new Criteria() {
+            @Override
+            public boolean isSatisfied() {
+                int pid = Process.myPid();
+                int uid = Process.myUid();
+                boolean granted = ApiCompatibilityUtils.checkPermission(getActivity(),
+                                          Manifest.permission.READ_EXTERNAL_STORAGE, pid, uid)
+                        == PackageManager.PERMISSION_GRANTED;
+                updateFailureReason("File read permission was granted: " + granted);
+                return granted;
+            }
+        });
+    }
+
     private void assertWaitForKeyboardStatus(final boolean show) throws InterruptedException {
         CriteriaHelper.pollUiThread(new Criteria() {
             @Override