WebLayer: Add Tab#willAutomaticallyReloadAfterCrash

This matches the current logic of the internal TabImpl#isVisible method
(inverted), which is true when a tab is active and in a started
fragment. The name reflects the reason for exposing this method, i.e.
why we think it's notable to clients.

Test coverage will be added in a follow up.

Bug: 1146058
Change-Id: Ibb538fa349623ca214774ef53496fab2414a6c78
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2525848
Commit-Queue: Evan Stade <estade@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826396}

weblayer/browser/java/org/chromium/weblayer_private/TabImpl.java

@@ -458,13 +458,23 @@ public final class TabImpl extends ITab.Stub {
     /**
      * Returns whether this Tab is visible.
      */
-    @CalledByNative
     public boolean isVisible() {
         return isActiveTab()
                 && ((mBrowser.isStarted() && mBrowser.isViewAttachedToWindow())
                         || mBrowser.isInConfigurationChangeAndWasAttached());
     }
 
+    @CalledByNative
+    public boolean willAutomaticallyReloadAfterCrashImpl() {
+        return !isVisible();
+    }
+
+    @Override
+    public boolean willAutomaticallyReloadAfterCrash() {
+        StrictModeWorkaround.apply();
+        return willAutomaticallyReloadAfterCrashImpl();
+    }
+
     public boolean isActiveTab() {
         return mBrowser.getActiveTab() == this;
     }

weblayer/browser/java/org/chromium/weblayer_private/interfaces/ITab.aidl

@@ -78,4 +78,5 @@ interface ITab {
 
   // Added in 88
   void setFloatingActionModeOverride(in int actionModeItemTypes) = 27;
+  boolean willAutomaticallyReloadAfterCrash() = 28;
 }

weblayer/browser/tab_impl.cc

@@ -1131,8 +1131,7 @@ void TabImpl::RenderProcessGone(base::TerminationStatus status) {
   // WebContents that it should automatically reload the next time it becomes
   // visible.
   JNIEnv* env = AttachCurrentThread();
-  bool visible = Java_TabImpl_isVisible(env, java_impl_);
-  if (!visible)
+  if (Java_TabImpl_willAutomaticallyReloadAfterCrashImpl(env, java_impl_))
     web_contents()->GetController().SetNeedsReload();
 #endif
 

weblayer/public/java/org/chromium/weblayer/Tab.java

@@ -137,6 +137,27 @@ public class Tab {
         return mImpl == null;
     }
 
+    /**
+     * Returns whether the tab will automatically reload after its renderer process is lost.
+     *
+     * This returns true if the tab is known not to be visible, specifically if the tab is not
+     * active in its browser or its Fragment is not started. When a tab in this state loses its
+     * renderer process to a crash (or due to system memory reclamation), it will automatically
+     * reload next the time it becomes possibly visible.
+     */
+    public boolean willAutomaticallyReloadAfterCrash() {
+        ThreadCheck.ensureOnUiThread();
+        throwIfDestroyed();
+        if (WebLayer.getSupportedMajorVersionInternal() < 88) {
+            throw new UnsupportedOperationException();
+        }
+        try {
+            return mImpl.willAutomaticallyReloadAfterCrash();
+        } catch (RemoteException e) {
+            throw new APICallException(e);
+        }
+    }
+
     @NonNull
     public Browser getBrowser() {
         ThreadCheck.ensureOnUiThread();