Revert 221946 "[Android WebView] Enable spatial navigation / DPAD"

> [Android WebView] Enable spatial navigation / DPAD
> 
> Turn on the --enable-spatial-navigation flag, and also bubble up
> unhandled DPAD events to the neighboring views in the view tree.
> Likewise, WebContentsDelegate::TakeFocus() bubble to logical next
> or previous neighbor view.
> 
> Also disabled the FileSystem API while in the area updating flags.
> 
> BUG=286698
> 
> Review URL: https://chromiumcodereview.appspot.com/23619024

TBR=joth@chromium.org

Review URL: https://codereview.chromium.org/23494033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221989 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/java/src/org/chromium/android_webview/AwContents.java

@@ -490,7 +490,7 @@ public class AwContents {
         mLayoutSizer.setDelegate(new AwLayoutSizerDelegate());
         mLayoutSizer.setDIPScale(mDIPScale);
         mWebContentsDelegate = new AwWebContentsDelegateAdapter(contentsClient,
-                mLayoutSizer.getPreferredSizeChangedListener(), mContainerView);
+                mLayoutSizer.getPreferredSizeChangedListener());
         mContentsClientBridge = new AwContentsClientBridge(contentsClient);
         mZoomControls = new AwZoomControls(this);
         mIoThreadClient = new IoThreadClientImpl();

android_webview/java/src/org/chromium/android_webview/AwWebContentsDelegateAdapter.java

@@ -10,7 +10,6 @@ import android.os.Looper;
 import android.os.Message;
 import android.util.Log;
 import android.view.KeyEvent;
-import android.view.View;
 import android.webkit.ConsoleMessage;
 import android.webkit.ValueCallback;
 
@@ -38,14 +37,11 @@ class AwWebContentsDelegateAdapter extends AwWebContentsDelegate {
 
     final AwContentsClient mContentsClient;
     final PreferredSizeChangedListener mPreferredSizeChangedListener;
-    final View mContainerView;
 
     public AwWebContentsDelegateAdapter(AwContentsClient contentsClient,
-            PreferredSizeChangedListener preferredSizeChangedListener,
-            View containerView) {
+            PreferredSizeChangedListener preferredSizeChangedListener) {
         mContentsClient = contentsClient;
         mPreferredSizeChangedListener = preferredSizeChangedListener;
-        mContainerView = containerView;
     }
 
     @Override
@@ -55,45 +51,9 @@ class AwWebContentsDelegateAdapter extends AwWebContentsDelegate {
 
     @Override
     public void handleKeyboardEvent(KeyEvent event) {
-        if (event.getAction() == KeyEvent.ACTION_DOWN) {
-            int direction;
-            switch (event.getKeyCode()) {
-                case KeyEvent.KEYCODE_DPAD_DOWN:
-                    direction = View.FOCUS_DOWN;
-                    break;
-                case KeyEvent.KEYCODE_DPAD_UP:
-                    direction = View.FOCUS_UP;
-                    break;
-                case KeyEvent.KEYCODE_DPAD_LEFT:
-                    direction = View.FOCUS_LEFT;
-                    break;
-                case KeyEvent.KEYCODE_DPAD_RIGHT:
-                    direction = View.FOCUS_RIGHT;
-                    break;
-                default:
-                    direction = 0;
-                    break;
-            }
-            if (direction != 0 && tryToMoveFocus(direction)) return;
-        }
         mContentsClient.onUnhandledKeyEvent(event);
     }
 
-    @Override
-    public boolean takeFocus(boolean reverse) {
-        int direction =
-            (reverse == (mContainerView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL)) ?
-            View.FOCUS_RIGHT : View.FOCUS_LEFT;
-        if (tryToMoveFocus(direction)) return true;
-        direction = reverse ? View.FOCUS_UP : View.FOCUS_DOWN;
-        return tryToMoveFocus(direction);
-    }
-
-    private boolean tryToMoveFocus(int direction) {
-        View focus = mContainerView.focusSearch(direction);
-        return focus != null && focus != mContainerView && focus.requestFocus();
-    }
-
     @Override
     public boolean addMessageToConsole(int level, String message, int lineNumber,
             String sourceId) {

android_webview/lib/main/aw_main_delegate.cc

@@ -64,14 +64,6 @@ bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   // Ganesh backed 2D-Canvas is not yet working and causes crashes.
   cl->AppendSwitch(switches::kDisableAccelerated2dCanvas);
 
-  // File system API not supported (requires some new API; internal bug 6930981)
-  // TODO(joth): export and use switches::kDisableFileSystem
-  cl->AppendSwitch("disable-file-system");
-
-  // Enable D-PAD navigation for application compatibility.
-  // TODO(joth): export and use switches::EnableSpatialNavigation.
-  cl->AppendSwitch("enable-spatial-navigation");
-
   return false;
 }