Replaced is_null() with is_valid in SurfaceId and related classes.

blimp/client/core/compositor/blimp_compositor.cc

 // Copyright 2015 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 "blimp/client/core/compositor/blimp_compositor.h"
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 195 matching lines @@
 }
 
 void BlimpCompositor::SubmitCompositorFrame(cc::CompositorFrame frame) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(surface_factory_);
 
   cc::RenderPass* root_pass =
       frame.delegated_frame_data->render_pass_list.back().get();
   gfx::Size surface_size = root_pass->output_rect.size();
 
-  if (local_frame_id_.is_null() || current_surface_size_ != surface_size) {
+  if (!local_frame_id_.is_valid() || current_surface_size_ != surface_size) {
     DestroyDelegatedContent();
     DCHECK(layer_->children().empty());
 
     local_frame_id_ = surface_id_allocator_->GenerateId();
     surface_factory_->Create(local_frame_id_);
     current_surface_size_ = surface_size;
 
     // manager must outlive compositors using it.
     cc::SurfaceManager* surface_manager =
         GetEmbedderDeps()->GetSurfaceManager();
@@ skipping 41 matching lines @@
       base::Bind(
           &BlimpCompositorFrameSinkProxyClient::ReclaimCompositorResources,
           proxy_client_, resources));
 }
 
 CompositorDependencies* BlimpCompositor::GetEmbedderDeps() {
   return compositor_dependencies_->GetEmbedderDependencies();
 }
 
 void BlimpCompositor::DestroyDelegatedContent() {
-  if (local_frame_id_.is_null())
+  if (!local_frame_id_.is_valid())
     return;
 
   // Remove any references for the surface layer that uses this
   // |local_frame_id_|.
   layer_->RemoveAllChildren();
   surface_factory_->Destroy(local_frame_id_);
   local_frame_id_ = cc::LocalFrameId();
 }
 
 void BlimpCompositor::CreateLayerTreeHost() {
@@ skipping 53 matching lines @@
       it->second.Run();
       it = pending_commit_trackers_.erase(it);
     } else {
       ++it;
     }
   }
 }
 
 }  // namespace client
 }  // namespace blimp