Chromecast Android buildfix: use new ContentViewCore.initialize API.

See: https://codereview.chromium.org/831523005

R=dtrainor@chromium.org,lcwu@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/879073002

Cr-Commit-Position: refs/heads/master@{#313391}

chromecast/browser/android/apk/src/org/chromium/chromecast/shell/CastWindowAndroid.java

@@ -124,11 +124,11 @@ public class CastWindowAndroid extends LinearLayout {
      */
     @SuppressWarnings("unused")
     @CalledByNative
-    private void initFromNativeWebContents(long nativeWebContents, int renderProcessId) {
+    private void initFromNativeWebContents(WebContents webContents, int renderProcessId) {
         Context context = getContext();
         mContentViewCore = new ContentViewCore(context);
         ContentView view = ContentView.newInstance(context, mContentViewCore);
-        mContentViewCore.initialize(view, view, nativeWebContents, mWindow);
+        mContentViewCore.initialize(view, view, webContents, mWindow);
         mWebContents = mContentViewCore.getWebContents();
         mNavigationController = mWebContents.getNavigationController();
         mRenderProcessId = renderProcessId;

chromecast/browser/android/cast_window_android.cc

@@ -69,7 +69,7 @@ CastWindowAndroid* CastWindowAndroid::CreateCastWindowAndroid(
   web_contents->SetDelegate(shell);
 
   Java_CastWindowAndroid_initFromNativeWebContents(
-      env, shell->java_object_.obj(), reinterpret_cast<jint>(web_contents),
+      env, shell->java_object_.obj(), web_contents->GetJavaWebContents().obj(),
       web_contents->GetRenderProcessHost()->GetID());
 
   // Enabling hole-punching also requires runtime renderer preference