📺 Move fullscreen web content to a new Activity.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/FullscreenWebContentsActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/FullscreenWebContentsActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/FullscreenWebContentsActivity.java
new file mode 100644
index 0000000000000000000000000000000000000000..1ec8ab56f4de2d9f3f34fe28f27ede3ce47cc50e
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/FullscreenWebContentsActivity.java
@@ -0,0 +1,49 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tabmodel.AsyncTabParamsManager;
+import org.chromium.chrome.browser.tabmodel.TabReparentingParams;
+import org.chromium.chrome.browser.util.IntentUtils;
+import org.chromium.chrome.browser.webapps.FullScreenActivity;
+
+/**
+ * An Activity used to display fullscreen WebContents.
+ */
+public class FullscreenWebContentsActivity extends FullScreenActivity {
+    @Override
+    protected Tab createTab() {
+        assert getIntent().hasExtra(IntentHandler.EXTRA_TAB_ID);
+
+        int tabId = IntentUtils.safeGetIntExtra(
+                getIntent(), IntentHandler.EXTRA_TAB_ID, Tab.INVALID_TAB_ID);
+        TabReparentingParams params = (TabReparentingParams) AsyncTabParamsManager.remove(tabId);
+
+        Tab tab = params.getTabToReparent();
+        tab.attachAndFinishReparenting(this, createTabDelegateFactory(), params);
+        return tab;
+    }
+
+    @Override
+    protected int getControlContainerLayoutId() {
+        // TODO(peconn): Determine if there's something more suitable to use here.
+        return R.layout.webapp_control_container;
+    }
+
+    @Override
+    protected ChromeFullscreenManager createFullscreenManager() {
+        // Create a Fullscreen manager that won't change the Tab's fullscreen state when the
+        // Activity ends - we handle leaving fullscreen ourselves.
+        return new ChromeFullscreenManager(this, false, false);
+    }
+
+    @Override
+    public boolean supportsFullscreenActivity() {
+        return true;
+    }
+}