Refactor Vr activity into ChromeTabbedActivity.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index e4516704b844dbf988ed4a45b330130a1d1772ca..62ce11d43cf8e9ca78e552c86fe184a6348501f5 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -95,6 +95,7 @@ import org.chromium.chrome.browser.tabmodel.TabWindowManager;
 import org.chromium.chrome.browser.toolbar.ToolbarControlContainer;
 import org.chromium.chrome.browser.util.FeatureUtilities;
 import org.chromium.chrome.browser.util.IntentUtils;
+import org.chromium.chrome.browser.vr_shell.VrShellDelegate;
 import org.chromium.chrome.browser.widget.emptybackground.EmptyBackgroundViewWrapper;
 import org.chromium.chrome.browser.widget.findinpage.FindToolbarManager;
 import org.chromium.content.browser.ContentVideoView;
@@ -215,6 +216,8 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
     // Time at which an intent was received and handled.
     private long mIntentHandlingTimeMs = 0;
 
+    private VrShellDelegate mVrShellDelegate;
+
     private class TabbedAssistStatusHandler extends AssistStatusHandler {
         public TabbedAssistStatusHandler(Activity activity) {
             super(activity);
@@ -367,12 +370,14 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
             }
             mMergeTabsOnResume = false;
         }
+        if (mVrShellDelegate.isInVR()) mVrShellDelegate.resumeVR();
     }
 
     @Override
     public void onPauseWithNative() {
         mTabModelSelectorImpl.commitAllTabClosures();
         CookiesFetcher.persistCookies(this);
+        if (mVrShellDelegate.isInVR()) mVrShellDelegate.pauseVR();
         super.onPauseWithNative();
     }
 
@@ -411,6 +416,9 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
             if (CommandLine.getInstance().hasSwitch(ContentSwitches.ENABLE_TEST_INTENTS)) {
                 handleDebugIntent(intent);
             }
+            if (!mVrShellDelegate.isInVR() && mVrShellDelegate.isVrIntent(intent)) {
+                mVrShellDelegate.enterVRIfNecessary();
+            }
         } finally {
             TraceEvent.end("ChromeTabbedActivity.onNewIntentWithNative");
         }
@@ -593,9 +601,15 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
             }
 
             mIntentWithEffect = false;
-            if ((mIsOnFirstRun || getSavedInstanceState() == null) && intent != null
-                    && !mIntentHandler.shouldIgnoreIntent(ChromeTabbedActivity.this, intent)) {
-                mIntentWithEffect = mIntentHandler.onNewIntent(ChromeTabbedActivity.this, intent);
+            if ((mIsOnFirstRun || getSavedInstanceState() == null) && intent != null) {
+                if (mVrShellDelegate.isVrIntent(intent)) {
+                    // TODO(mthiesse): Improve startup when started from a VR intent. Right now
+                    // we launch out of VR, partially load out of VR, then switch into VR.
+                    mVrShellDelegate.enterVRIfNecessary();
+                } else if (!mIntentHandler.shouldIgnoreIntent(ChromeTabbedActivity.this, intent)) {
+                    mIntentWithEffect = mIntentHandler.onNewIntent(ChromeTabbedActivity.this,
+                            intent);
+                }
             }
 
             mCreatedTabOnStartup = getCurrentTabModel().getCount() > 0
@@ -940,6 +954,8 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
 
         mUndoBarPopupController = new UndoBarController(this, mTabModelSelectorImpl,
                 getSnackbarManager());
+
+        mVrShellDelegate = new VrShellDelegate(this, mContentContainer);
     }
 
     @Override
@@ -1118,6 +1134,8 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
             TabModel currentModel = mTabModelSelectorImpl.getCurrentModel();
             if (!currentModel.isIncognito()) currentModel.openMostRecentlyClosedTab();
             RecordUserAction.record("MobileTabClosedUndoShortCut");
+        } else if (id == R.id.enter_vr_id) {
+            mVrShellDelegate.enterVRIfNecessary();
         } else {
             return super.onMenuOrKeyboardAction(id, fromMenu);
         }
@@ -1155,6 +1173,8 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
         if (!mUIInitialized) return false;
         final Tab currentTab = getActivityTab();
 
+        if (mVrShellDelegate.exitVRIfNecessary()) return true;
+
         if (currentTab == null) {
             recordBackPressedUma("currentTab is null", BACK_PRESSED_TAB_IS_NULL);
             moveTaskToBack(true);
@@ -1370,6 +1390,10 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
             mUndoBarPopupController = null;
         }
 
+        if (mVrShellDelegate != null) {
+            mVrShellDelegate.destroyVrShell();
+        }
+
         super.onDestroyInternal();
     }
 
@@ -1565,4 +1589,12 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
         RecordUserAction.record("Android.MergeState.Live");
         mTabModelSelectorImpl.mergeState();
     }
+
+    /**
+     * See VrShellDelegate#isVrShellEnabled()
+     */
+    @Override
+    public boolean isVrShellEnabled() {
+        return mVrShellDelegate.isVrShellEnabled();
+    }
 }