Converted Ppapi post swap buffer sync point to use sync tokens.

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 172c3b7e1c1b740cfe74c72d0cf1dc991719d198..5f9aee44c4aa8b22a7468232cd4d77f2a40eaa49 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -784,15 +784,18 @@ void PepperPluginInstanceImpl::ScrollRect(int dx,
 }
 
 void PepperPluginInstanceImpl::CommitBackingTexture() {
-  if (!texture_layer_.get())
+  if (!texture_layer_.get()) {

[dcheng, 2016/01/14 02:33:33]

Nit: remove the .get(), since this is being updated anyway

[David Yen, 2016/01/14 19:14:36]

Done. I removed all of them for texture_layer_.get() when used as a boolean.

+    UpdateLayer(true);
     return;
+  }
+
   gpu::Mailbox mailbox;
-  uint32_t sync_point = 0;
-  bound_graphics_3d_->GetBackingMailbox(&mailbox, &sync_point);
+  gpu::SyncToken sync_token;
+  bound_graphics_3d_->GetBackingMailbox(&mailbox, &sync_token);
   DCHECK(!mailbox.IsZero());
-  DCHECK_NE(sync_point, 0u);
+  DCHECK(sync_token.HasData());
   texture_layer_->SetTextureMailboxWithoutReleaseCallback(
-      cc::TextureMailbox(mailbox, gpu::SyncToken(sync_point), GL_TEXTURE_2D));
+      cc::TextureMailbox(mailbox, sync_token, GL_TEXTURE_2D));
   texture_layer_->SetNeedsDisplay();
 }
 
@@ -1973,17 +1976,16 @@ bool PepperPluginInstanceImpl::PrintPDFOutput(PP_Resource print_output,
   return false;
 }
 
-void PepperPluginInstanceImpl::UpdateLayer(bool device_changed) {
+void PepperPluginInstanceImpl::UpdateLayer(bool force_creation) {
   if (!container_)
     return;
 
   gpu::Mailbox mailbox;
-  uint32_t sync_point = 0;
+  gpu::SyncToken sync_token;
   if (bound_graphics_3d_.get()) {
-    bound_graphics_3d_->GetBackingMailbox(&mailbox, &sync_point);
-    DCHECK_EQ(mailbox.IsZero(), sync_point == 0);
+    bound_graphics_3d_->GetBackingMailbox(&mailbox, &sync_token);
   }
-  bool want_3d_layer = !mailbox.IsZero();
+  bool want_3d_layer = !mailbox.IsZero() && sync_token.HasData();
   bool want_2d_layer = !!bound_graphics_2d_platform_;
   bool want_texture_layer = want_3d_layer || want_2d_layer;
   bool want_compositor_layer = !!bound_compositor_;
@@ -1995,7 +1997,7 @@ void PepperPluginInstanceImpl::UpdateLayer(bool device_changed) {
     want_compositor_layer = false;
   }
 
-  if (!device_changed && (want_texture_layer == !!texture_layer_.get()) &&
+  if (!force_creation && (want_texture_layer == !!texture_layer_.get()) &&
       (want_3d_layer == layer_is_hardware_) &&
       (want_compositor_layer == !!compositor_layer_.get()) &&
       layer_bound_to_fullscreen_ == !!fullscreen_container_) {
@@ -2024,8 +2026,7 @@ void PepperPluginInstanceImpl::UpdateLayer(bool device_changed) {
           cc_blink::WebLayerImpl::LayerSettings(), NULL);
       opaque = bound_graphics_3d_->IsOpaque();
       texture_layer_->SetTextureMailboxWithoutReleaseCallback(
-          cc::TextureMailbox(mailbox, gpu::SyncToken(sync_point),
-                             GL_TEXTURE_2D));
+          cc::TextureMailbox(mailbox, sync_token, GL_TEXTURE_2D));
     } else {
       DCHECK(bound_graphics_2d_platform_);
       texture_layer_ = cc::TextureLayer::CreateForMailbox(