Removing ContentViewCore dependencies from few functions which acts as direct wrapper to WebContents

content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java

Index: content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
index 5caa21422090dda3c8d40ff1abb37c6dad6625c0..8d29e19ad6373bb9d04c82dc667901f5af63cd48 100644
--- a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
+++ b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
@@ -21,6 +21,42 @@ import org.chromium.content_public.browser.WebContents;
     private long mNativeWebContentsAndroid;
     private NavigationController mNavigationController;
 
+    /**
+     * An interface that allows the embedder to be notified of navigation transition
+     * related events and respond to them.
+     */
+    public interface NavigationTransitionDelegate {
+        /**
+         * Called when the navigation is deferred immediately after the response started.
+         *
+         * @param enteringColor The background color of the entering document, as a String
+         *                      representing a legal CSS color value. This is inserted into
+         *                      the transition layer's markup after the entering stylesheets
+         *                      have been applied.
+         */
+        public void didDeferAfterResponseStarted(String enteringColor);
+
+        /**
+         * Called when a navigation transition has been detected, and we need to check
+         * if it's supported.
+         */
+        public boolean willHandleDeferAfterResponseStarted();
+
+        /**
+         * Called when the navigation is deferred immediately after the response
+         * started.
+         */
+        public void addEnteringStylesheetToTransition(String stylesheet);
+
+        /**
+         * Notifies that a navigation transition is started for a given frame.
+         * @param frameId A positive, non-zero integer identifying the navigating frame.
+         */
+        public void didStartNavigationTransitionForFrame(long frameId);
+    }
+
+    private NavigationTransitionDelegate mNavigationTransitionDelegate = null;
+
     private WebContentsImpl(
             long nativeWebContentsAndroid, NavigationController navigationController) {
         mNativeWebContentsAndroid = nativeWebContentsAndroid;
@@ -136,6 +172,50 @@ import org.chromium.content_public.browser.WebContents;
         nativeSelectWordAroundCaret(mNativeWebContentsAndroid);
     }
 
+    @Override
+    public String getUrl() {
+        return nativeGetURL(mNativeWebContentsAndroid);
+    }
+
+    @Override
+    public boolean isIncognito() {
+        return nativeIsIncognito(mNativeWebContentsAndroid);
+    }
+
+    @Override
+    public void resumeResponseDeferredAtStart() {
+         nativeResumeResponseDeferredAtStart(mNativeWebContentsAndroid);
+    }
+
+    @Override
+    public void setHasPendingNavigationTransitionForTesting() {
+         nativeSetHasPendingNavigationTransitionForTesting(mNativeWebContentsAndroid);
+    }
+
+    public void setNavigationTransitionDelegate(NavigationTransitionDelegate delegate) {
+        mNavigationTransitionDelegate = delegate;
+    }
+
+    @CalledByNative
+    private void didDeferAfterResponseStarted(String enteringColor) {
+        if (mNavigationTransitionDelegate != null ) {
+            mNavigationTransitionDelegate.didDeferAfterResponseStarted(enteringColor);
+        }
+    }
+
+    @CalledByNative
+    private boolean willHandleDeferAfterResponseStarted() {
+        if (mNavigationTransitionDelegate == null) return false;
+        return mNavigationTransitionDelegate.willHandleDeferAfterResponseStarted();
+    }
+
+    @CalledByNative
+    private void addEnteringStylesheetToTransition(String stylesheet) {
+        if (mNavigationTransitionDelegate != null ) {
+            mNavigationTransitionDelegate.addEnteringStylesheetToTransition(stylesheet);
+        }
+    }
+
     private native String nativeGetTitle(long nativeWebContentsAndroid);
     private native String nativeGetVisibleURL(long nativeWebContentsAndroid);
     private native void nativeStop(long nativeWebContentsAndroid);
@@ -155,4 +235,9 @@ import org.chromium.content_public.browser.WebContents;
     private native void nativeShowImeIfNeeded(long nativeWebContentsAndroid);
     private native void nativeScrollFocusedEditableNodeIntoView(long nativeWebContentsAndroid);
     private native void nativeSelectWordAroundCaret(long nativeWebContentsAndroid);
+    private native String nativeGetURL(long nativeWebContentsAndroid);
+    private native boolean nativeIsIncognito(long nativeWebContentsAndroid);
+    private native void nativeResumeResponseDeferredAtStart(long nativeWebContentsAndroid);
+    private native void nativeSetHasPendingNavigationTransitionForTesting(
+            long nativeWebContentsAndroid);
 }