Removing ContentViewCore dependencies from direct WebContents functions.

chrome/android/java/src/org/chromium/chrome/browser/Tab.java

Index: chrome/android/java/src/org/chromium/chrome/browser/Tab.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
index e2eb139ef4ac760eac5468db6cb97d31931223eb..09f4ea003552afd6dcdf3882224ea709d6ac0afa 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
@@ -209,17 +209,17 @@ public class Tab implements NavigationClient {
         }
 
         @Override
-        public void showRepostFormWarningDialog(final ContentViewCore contentViewCore) {
+        public void showRepostFormWarningDialog(final WebContents webContents) {
             RepostFormWarningDialog warningDialog = new RepostFormWarningDialog(
                     new Runnable() {
                         @Override
                         public void run() {
-                            getWebContents().getNavigationController().cancelPendingReload();
+                            webContents.getNavigationController().cancelPendingReload();
                         }
                     }, new Runnable() {
                         @Override
                         public void run() {
-                            getWebContents().getNavigationController().continuePendingReload();
+                            webContents.getNavigationController().continuePendingReload();
                         }
                     });
             Activity activity = (Activity) mContext;
@@ -467,7 +467,7 @@ public class Tab implements NavigationClient {
      * @return Whether or not the tab has something valid to render.
      */
     public boolean isReady() {
-        return mNativePage != null || (mContentViewCore != null && mContentViewCore.isReady());
+        return mNativePage != null || (getWebContents() != null && getWebContents().isReady());
     }
 
     /**