Avoid recreating hardware_renderer_ if a draw occurs during cleanup.

android_webview/browser/render_thread_manager.cc

 // Copyright 2014 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 "android_webview/browser/render_thread_manager.h"
 
 #include <utility>
 
 #include "android_webview/browser/child_frame.h"
 #include "android_webview/browser/compositor_frame_producer.h"
@@ skipping 270 matching lines @@
   }
 
   ScopedAppGLStateRestore state_restore(
       draw_info->mode == AwDrawGLInfo::kModeDraw
           ? ScopedAppGLStateRestore::MODE_DRAW
           : ScopedAppGLStateRestore::MODE_RESOURCE_MANAGEMENT);
   // Set the correct FBO before kModeDraw. The GL commands run in kModeDraw
   // require a correctly bound FBO. The FBO remains until the next kModeDraw.
   // So kModeProcess between kModeDraws has correctly bound FBO, too.
   if (draw_info->mode == AwDrawGLInfo::kModeDraw && !hardware_renderer_ &&
-      HasFrameForHardwareRendererOnRT()) {
+      !IsInsideHardwareRelease() && HasFrameForHardwareRendererOnRT()) {
     hardware_renderer_.reset(new HardwareRenderer(this));
     hardware_renderer_->CommitFrame();
   }
   if (hardware_renderer_) {
     hardware_renderer_->SetBackingFrameBufferObject(
         state_restore.framebuffer_binding_ext());
   }
 
   ScopedAllowGL allow_gl;
 
@@ skipping 88 matching lines @@
     : render_thread_manager_(render_thread_manager) {
   DCHECK(!render_thread_manager_->IsInsideHardwareRelease());
   render_thread_manager_->SetInsideHardwareRelease(true);
 }
 
 RenderThreadManager::InsideHardwareReleaseReset::~InsideHardwareReleaseReset() {
   render_thread_manager_->SetInsideHardwareRelease(false);
 }
 
 }  // namespace android_webview