Allow VRDisplay to specify which frame the layer bounds should be updated at.

chrome/browser/android/vr_shell/vr_shell.cc

 // Copyright 2016 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 "chrome/browser/android/vr_shell/vr_shell.h"
 
 #include <android/native_window_jni.h>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/threading/platform_thread.h"
@@ skipping 276 matching lines @@
   return {size.width(), size.height()};
 }
 
 void VrShell::SetWebVRSecureOrigin(bool secure_origin) {
   // TODO(cjgrant): Align this state with the logic that drives the omnibox.
   html_interface_->SetWebVRSecureOrigin(secure_origin);
 }
 
 void VrShell::SubmitWebVRFrame() {}
 
-void VrShell::UpdateWebVRTextureBounds(const gvr::Rectf& left_bounds,
+void VrShell::UpdateWebVRTextureBounds(uint32_t frame_index,
+                                       const gvr::Rectf& left_bounds,
                                        const gvr::Rectf& right_bounds) {
   GLThread* thread = static_cast<GLThread*>(gl_thread_.get());
   PostToGlThreadWhenReady(base::Bind(&VrShellGl::UpdateWebVRTextureBounds,
-                                     thread->GetVrShellGl(), left_bounds,
-                                     right_bounds));
+                                     thread->GetVrShellGl(), frame_index,
+                                     left_bounds, right_bounds));
 }
 
 // TODO(mthiesse): Do not expose GVR API outside of GL thread.
 // It's not thread-safe.
 gvr::GvrApi* VrShell::gvr_api() {
   GLThread* thread = static_cast<GLThread*>(gl_thread_.get());
   if (thread->GetVrShellGlUnsafe()) {
     return thread->GetVrShellGlUnsafe()->gvr_api();
   }
   CHECK(false);
@@ skipping 163 matching lines @@
   return reinterpret_cast<intptr_t>(new VrShell(
       env, obj, content::WebContents::FromJavaWebContents(content_web_contents),
       reinterpret_cast<ui::WindowAndroid*>(content_window_android),
       content::WebContents::FromJavaWebContents(ui_web_contents),
       reinterpret_cast<ui::WindowAndroid*>(ui_window_android),
       for_web_vr, VrShellDelegate::GetNativeDelegate(env, delegate),
       reinterpret_cast<gvr_context*>(gvr_api), reprojected_rendering));
 }
 
 }  // namespace vr_shell