Send a message through the ozone channel to recreate buffers

content/browser/compositor/buffer_queue.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 "content/browser/compositor/buffer_queue.h"
 
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/common/gpu/client/gl_helper.h"
@@ skipping 102 matching lines @@
 
   // TODO: add stencil buffer when needed.
   gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
   gl->BindFramebuffer(GL_FRAMEBUFFER, fbo_);
   gl->FramebufferTexture2D(
       GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
 
   FreeAllSurfaces();
 }
 
+void BufferQueue::RecreateBuffers() {
+  AllocatedSurface previous = in_flight_surfaces_.back();
+  in_flight_surfaces_.pop_back();
+  FreeAllSurfaces();
+  FreeSurface(&current_surface_);
+
+  AllocatedSurface first_buffer = GetNextSurface();
+  CopyBufferDamage(first_buffer.texture, previous.texture, gfx::Rect(),
+                   gfx::Rect(size_));
+  in_flight_surfaces_.push_back(first_buffer);
+
+  AllocatedSurface second_buffer = GetNextSurface();
+  CopyBufferDamage(second_buffer.texture, previous.texture, gfx::Rect(),
+                   gfx::Rect(size_));
+  available_surfaces_.push_back(second_buffer);
+
+  BindFramebuffer();
+  FreeSurface(&previous);
+}
+
 void BufferQueue::PageFlipComplete() {
   if (in_flight_surfaces_.size() > 1) {
     available_surfaces_.push_back(in_flight_surfaces_.front());
     in_flight_surfaces_.pop_front();
   }
 }
 
 void BufferQueue::FreeAllSurfaces() {
   FreeSurface(&current_surface_);
   while (!in_flight_surfaces_.empty()) {
@@ skipping 53 matching lines @@
     gl->DeleteTextures(1, &texture);
     return AllocatedSurface();
   }
   allocated_count_++;
   gl->BindTexture(GL_TEXTURE_2D, texture);
   gl->BindTexImage2DCHROMIUM(GL_TEXTURE_2D, id);
   return AllocatedSurface(texture, id, gfx::Rect(size_));
 }
 
 }  // namespace content