cc: Add mailbox support to ResourceProvider write locks.

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index 568c6f2b8bc6f320a95ec1e533cd30d7d1e44cd6..673c6095d09a8914ad91c6f197c5f48e26067d0a 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -226,7 +226,8 @@ VideoResourceUpdater::AllocateResource(const gfx::Size& plane_size,
     gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
 
     gl->GenMailboxCHROMIUM(mailbox.name);
-    ResourceProvider::ScopedWriteLockGL lock(resource_provider_, resource_id);
+    ResourceProvider::ScopedWriteLockGL lock(resource_provider_, resource_id,
+                                             false);
     gl->ProduceTextureDirectCHROMIUM(
         lock.texture_id(),
         resource_provider_->GetResourceTextureTarget(resource_id),
@@ -636,16 +637,14 @@ void VideoResourceUpdater::CopyPlaneTexture(
   ++resource->ref_count;
 
   ResourceProvider::ScopedWriteLockGL lock(resource_provider_,
-                                           resource->resource_id);
-  uint32_t texture_id = lock.texture_id();
-
+                                           resource->resource_id, false);
   DCHECK_EQ(resource_provider_->GetResourceTextureTarget(resource->resource_id),
             (GLenum)GL_TEXTURE_2D);
 
   gl->WaitSyncTokenCHROMIUM(mailbox_holder.sync_token.GetConstData());
   uint32_t src_texture_id = gl->CreateAndConsumeTextureCHROMIUM(
       mailbox_holder.texture_target, mailbox_holder.mailbox.name);
-  gl->CopySubTextureCHROMIUM(src_texture_id, texture_id, 0, 0, 0, 0,
+  gl->CopySubTextureCHROMIUM(src_texture_id, lock.texture_id(), 0, 0, 0, 0,
                              output_plane_resource_size.width(),
                              output_plane_resource_size.height(), false, false,
                              false);