ppapi: Send sync point whenever the pepper texture changes.

content/renderer/pepper/ppb_graphics_3d_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/renderer/pepper/ppb_graphics_3d_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 167 matching lines @@
   return platform_context_->GetGpuControl();
 }
 
 int32 PPB_Graphics3D_Impl::DoSwapBuffers() {
   // We do not have a GLES2 implementation when using an OOP proxy.
   // The plugin-side proxy is responsible for adding the SwapBuffers command
   // to the command buffer in that case.
   if (gles2_impl())
     gles2_impl()->SwapBuffers();
 
+  // Since the backing texture has been updated, a new sync point should be
+  // inserted.
+  platform_context_->InsertSyncPointForBackingMailbox();
+
   if (bound_to_instance_) {
     // If we are bound to the instance, we need to ask the compositor
     // to commit our backing texture so that the graphics appears on the page.
     // When the backing texture will be committed we get notified via
     // ViewFlushedPaint().
     //
     // Don't need to check for NULL from GetPluginInstance since when we're
     // bound, we know our instance is valid.
     HostGlobals::Get()->GetInstance(pp_instance())->CommitBackingTexture();
     commit_pending_ = true;
@@ skipping 129 matching lines @@
               PPP_GRAPHICS_3D_INTERFACE));
   // We have to check *again* that the instance exists, because it could have
   // been deleted during GetPluginInterface(). Even the PluginModule could be
   // deleted, but in that case, the instance should also be gone, so the
   // GetInstance check covers both cases.
   if (ppp_graphics_3d && HostGlobals::Get()->GetInstance(this_pp_instance))
     ppp_graphics_3d->Graphics3DContextLost(this_pp_instance);
 }
 
 }  // namespace content