Speculative hardening of fullscreen infobar code.

chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java
index b4683ab6f87ba126d95e890f978dd776007a21ec..2f63e766ebd960abb84f3ae8db2eb0e282dfe35f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/fullscreen/FullscreenInfoBarDelegate.java
@@ -14,7 +14,7 @@ import org.chromium.chrome.browser.tab.Tab;
  */
 public class FullscreenInfoBarDelegate {
     private final FullscreenHtmlApiHandler mHandler;
-    private final Tab mTab;
+    private final boolean mIsForIncognitoTab;
     private long mNativeFullscreenInfoBarDelegate = 0;
 
     /**
@@ -31,7 +31,7 @@ public class FullscreenInfoBarDelegate {
             FullscreenHtmlApiHandler handler, Tab tab) {
         assert tab != null;
         mHandler = handler;
-        mTab = tab;
+        mIsForIncognitoTab = tab.isIncognito();
         mNativeFullscreenInfoBarDelegate = nativeLaunchFullscreenInfoBar(tab);
     }
 
@@ -40,7 +40,7 @@ public class FullscreenInfoBarDelegate {
      */
     protected void closeFullscreenInfoBar() {
         if (mNativeFullscreenInfoBarDelegate != 0) {
-            nativeCloseFullscreenInfoBar(mNativeFullscreenInfoBarDelegate, mTab);
+            nativeCloseFullscreenInfoBar(mNativeFullscreenInfoBarDelegate);
         }
     }
 
@@ -51,7 +51,7 @@ public class FullscreenInfoBarDelegate {
      */
     @CalledByNative
     private void onFullscreenAllowed(String origin) {
-        FullscreenInfo fullscreenInfo = new FullscreenInfo(origin, null, mTab.isIncognito());
+        FullscreenInfo fullscreenInfo = new FullscreenInfo(origin, null, mIsForIncognitoTab);
         fullscreenInfo.setContentSetting(ContentSetting.ALLOW);
     }
 
@@ -72,5 +72,5 @@ public class FullscreenInfoBarDelegate {
     }
 
     private native long nativeLaunchFullscreenInfoBar(Tab tab);
-    private native void nativeCloseFullscreenInfoBar(long nativeFullscreenInfoBarDelegate, Tab tab);
+    private native void nativeCloseFullscreenInfoBar(long nativeFullscreenInfoBarDelegate);
 }