[Sync] SyncEngine 1.5: Fix all backend references in PSS.

chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java
index e46233c875432c71b35e204275b90f6f064769b8..b201134140241267251421624f34cb15a2f740e0 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/precache/PrecacheLauncherTest.java
@@ -57,7 +57,7 @@ public class PrecacheLauncherTest extends NativeLibraryTestBase {
         }
 
         @Override
-        public boolean isBackendInitialized() {
+        public boolean isEngineInitialized() {
             return mSyncInitialized;
         }
 
@@ -104,7 +104,7 @@ public class PrecacheLauncherTest extends NativeLibraryTestBase {
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {
-                // The StubProfileSyncService stubs out isBackendInitialized so we can change that
+                // The StubProfileSyncService stubs out isEngineInitialized so we can change that
                 // on the fly.
                 mSync = new StubProfileSyncService();
                 ProfileSyncService.overrideForTests(mSync);