Fix three causes of blank thumbnails [2nd land]

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
index 57a2d463cef54de1d9294e3fa4c5b069cc2f159a..62dbb5f115cac42dcdf445f3b022b906928c27e1 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
@@ -12,7 +12,6 @@ import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.compositor.layouts.OverviewModeBehavior;
 import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
-import org.chromium.chrome.browser.ntp.NativePageFactory;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
@@ -195,11 +194,7 @@ public class TabModelSelectorImpl extends TabModelSelectorBase implements TabMod
             @Override
             public void onPageLoadStarted(Tab tab, String url) {
                 String previousUrl = tab.getUrl();
-                if (NativePageFactory.isNativePageUrl(previousUrl, tab.isIncognito())) {
-                    mTabContentManager.invalidateTabThumbnail(tab.getId(), previousUrl);
-                } else {
-                    mTabContentManager.removeTabThumbnail(tab.getId());
-                }
+                mTabContentManager.invalidateTabThumbnail(tab.getId(), previousUrl);
             }
 
             @Override