[Sync] Remove periodic sync for Chrome for Android

updateAccount() is always called on startup with the signed in account,
so the removePeriodicSync() call will be hit even for already signed in
users when the app restarts.

BUG=480688

Review URL: https://codereview.chromium.org/1148613002

Cr-Commit-Position: refs/heads/master@{#330588}

sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java

@@ -8,6 +8,7 @@ import android.accounts.Account;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.SyncStatusObserver;
+import android.os.Bundle;
 import android.os.StrictMode;
 
 import org.chromium.base.ObserverList;
@@ -221,6 +222,9 @@ public class AndroidSyncSettings {
         // Make account syncable if there is one.
         if (shouldBeSyncable) {
             mSyncContentResolverDelegate.setIsSyncable(mAccount, mContractAuthority, 1);
+            // This reduces unnecessary resource usage. See http://crbug.com/480688 for details.
+            mSyncContentResolverDelegate.removePeriodicSync(
+                    mAccount, mContractAuthority, Bundle.EMPTY);
         }
 
         // Disable the syncability of Chrome for all other accounts. Don't use

sync/android/java/src/org/chromium/sync/SyncContentResolverDelegate.java

@@ -7,6 +7,7 @@ package org.chromium.sync;
 
 import android.accounts.Account;
 import android.content.SyncStatusObserver;
+import android.os.Bundle;
 
 /**
  * Since the ContentResolver in Android has a lot of static methods, it is hard to
@@ -30,4 +31,6 @@ public interface SyncContentResolverDelegate {
     void setIsSyncable(Account account, String authority, int syncable);
 
     int getIsSyncable(Account account, String authority);
+
+    void removePeriodicSync(Account account, String authority, Bundle extras);
 }

sync/android/java/src/org/chromium/sync/SystemSyncContentResolverDelegate.java

@@ -8,6 +8,7 @@ package org.chromium.sync;
 import android.accounts.Account;
 import android.content.ContentResolver;
 import android.content.SyncStatusObserver;
+import android.os.Bundle;
 
 /**
  * A SyncContentResolverDelegate that simply forwards calls to ContentResolver.
@@ -53,4 +54,9 @@ public class SystemSyncContentResolverDelegate implements SyncContentResolverDel
     public int getIsSyncable(Account account, String authority) {
         return ContentResolver.getIsSyncable(account, authority);
     }
+
+    @Override
+    public void removePeriodicSync(Account account, String authority, Bundle extras) {
+        ContentResolver.removePeriodicSync(account, authority, extras);
+    }
 }

sync/android/javatests/src/org/chromium/sync/AndroidSyncSettingsTest.java

@@ -6,6 +6,7 @@ package org.chromium.sync;
 
 import android.accounts.Account;
 import android.content.Context;
+import android.os.Bundle;
 import android.test.InstrumentationTestCase;
 import android.test.suitebuilder.annotation.SmallTest;
 
@@ -29,6 +30,7 @@ public class AndroidSyncSettingsTest extends InstrumentationTestCase {
         private int mGetIsSyncableCalls;
         private int mSetIsSyncableCalls;
         private int mSetSyncAutomaticallyCalls;
+        private int mRemovePeriodicSyncCalls;
 
         @Override
         public boolean getMasterSyncAutomatically() {
@@ -59,6 +61,12 @@ public class AndroidSyncSettingsTest extends InstrumentationTestCase {
             mSetSyncAutomaticallyCalls++;
             super.setSyncAutomatically(account, authority, sync);
         }
+
+        @Override
+        public void removePeriodicSync(Account account, String authority, Bundle extras) {
+            mRemovePeriodicSyncCalls++;
+            super.removePeriodicSync(account, authority, extras);
+        }
     }
 
     private static class MockSyncSettingsObserver implements AndroidSyncSettingsObserver {
@@ -135,6 +143,22 @@ public class AndroidSyncSettingsTest extends InstrumentationTestCase {
         });
     }
 
+    @SmallTest
+    @Feature({"Sync"})
+    public void testAccountInitialization() throws InterruptedException {
+        // mAccount was set to be syncable and not have periodic syncs.
+        assertEquals(1, mSyncContentResolverDelegate.mSetIsSyncableCalls);
+        assertEquals(1, mSyncContentResolverDelegate.mRemovePeriodicSyncCalls);
+        mAndroid.updateAccount(null);
+        // mAccount was set to be not syncable.
+        assertEquals(2, mSyncContentResolverDelegate.mSetIsSyncableCalls);
+        assertEquals(1, mSyncContentResolverDelegate.mRemovePeriodicSyncCalls);
+        mAndroid.updateAccount(mAlternateAccount);
+        // mAlternateAccount was set to be syncable and not have periodic syncs.
+        assertEquals(3, mSyncContentResolverDelegate.mSetIsSyncableCalls);
+        assertEquals(2, mSyncContentResolverDelegate.mRemovePeriodicSyncCalls);
+    }
+
     @SmallTest
     @Feature({"Sync"})
     public void testToggleMasterSyncFromSettings() throws InterruptedException {

sync/test/android/javatests/src/org/chromium/sync/test/util/MockSyncContentResolverDelegate.java

@@ -9,6 +9,7 @@ import android.accounts.Account;
 import android.content.ContentResolver;
 import android.content.SyncStatusObserver;
 import android.os.AsyncTask;
+import android.os.Bundle;
 
 import junit.framework.Assert;
 
@@ -144,6 +145,10 @@ public class MockSyncContentResolverDelegate implements SyncContentResolverDeleg
         }
     }
 
+    @Override
+    public void removePeriodicSync(Account account, String authority, Bundle extras) {
+    }
+
     private static String createKey(Account account, String authority) {
         return account.name + "@@@" + account.type + "@@@" + authority;
     }