Fix for renderer visibility on Android that doesn't break Aura and Mac.

content/browser/renderer_host/render_widget_host_impl.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 1180 matching lines @@
   renderer_initialized_ = false;
 
   waiting_for_screen_rects_ack_ = false;
 
   // Must reset these to ensure that keyboard events work with a new renderer.
   suppress_next_char_events_ = false;
 
   // Reset some fields in preparation for recovering from a crash.
   ResetSizeAndRepaintPendingFlags();
   current_size_.SetSize(0, 0);
+  // After the renderer crashes, the view is destroyed and so the
+  // RenderWidgetHost cannot track its visibility anymore. We assume such
+  // RenderWidgetHost to be visible for the sake of internal accounting - be
+  // careful about changing this - see http://crbug.com/401859.
+  //
+  // We need to at least make sure that the RenderProcessHost is notified about
+  // the |is_hidden_| change, so that the renderer will have correct visibility
+  // set when respawned.
+  if (!is_hidden_) {
+    process_->WidgetRestored();
+    is_hidden_ = false;
+  }
 
   // Reset this to ensure the hung renderer mechanism is working properly.
   in_flight_event_count_ = 0;
 
   if (view_) {
     GpuSurfaceTracker::Get()->SetSurfaceHandle(surface_id_,
                                                gfx::GLSurfaceHandle());
     view_->RenderProcessGone(status, exit_code);
     view_ = NULL;  // The View should be deleted by RenderProcessGone.
   }
@@ skipping 1106 matching lines @@
 }
 #endif
 
 SkColorType RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return kN32_SkColorType;
 }
 
 }  // namespace content