Remove unused context in ChromePreferenceManager.

chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
index 1726bfd2befa093d383e73404d99313a6839f3be..f63ea838bf37f5cbec41128152f01233b20c766b 100644
--- a/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
+++ b/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java
@@ -198,8 +198,7 @@ public class NewTabPageAdapterTest {
         ChromeFeatureList.setTestEnabledFeatures(Collections.<String>emptySet());
 
         // Initialise the sign in state. We will be signed in by default in the tests.
-        assertFalse(ChromePreferenceManager.getInstance(RuntimeEnvironment.application)
-                            .getNewTabPageSigninPromoDismissed());
+        assertFalse(ChromePreferenceManager.getInstance().getNewTabPageSigninPromoDismissed());
         SigninManager.setInstanceForTesting(mMockSigninManager);
         when(mMockSigninManager.isSignedInOnNative()).thenReturn(true);
         when(mMockSigninManager.isSignInAllowed()).thenReturn(true);
@@ -220,8 +219,7 @@ public class NewTabPageAdapterTest {
         CardsVariationParameters.setTestVariationParams(null);
         ChromeFeatureList.setTestEnabledFeatures(null);
         SigninManager.setInstanceForTesting(null);
-        ChromePreferenceManager.getInstance(RuntimeEnvironment.application)
-                .setNewTabPageSigninPromoDismissed(false);
+        ChromePreferenceManager.getInstance().setNewTabPageSigninPromoDismissed(false);
     }
 
     /**
@@ -791,8 +789,7 @@ public class NewTabPageAdapterTest {
 
         when(mMockSigninManager.isSignInAllowed()).thenReturn(true);
         when(mMockSigninManager.isSignedInOnNative()).thenReturn(false);
-        ChromePreferenceManager.getInstance(RuntimeEnvironment.application)
-                .setNewTabPageSigninPromoDismissed(false);
+        ChromePreferenceManager.getInstance().setNewTabPageSigninPromoDismissed(false);
         reloadNtp();
 
         final int signInPromoPosition = mAdapter.getFirstPositionForType(ItemViewType.PROMO);
@@ -803,8 +800,7 @@ public class NewTabPageAdapterTest {
 
         verify(itemDismissedCallback).onResult(anyString());
         assertFalse(isSignInPromoVisible());
-        assertTrue(ChromePreferenceManager.getInstance(RuntimeEnvironment.application)
-                           .getNewTabPageSigninPromoDismissed());
+        assertTrue(ChromePreferenceManager.getInstance().getNewTabPageSigninPromoDismissed());
 
         reloadNtp();
         assertFalse(isSignInPromoVisible());