Move output surface fallback from cc to embedders

cc/trees/layer_tree_host.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 #include <string>
 
@@ skipping 96 matching lines @@
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
     const LayerTreeSettings& settings)
     : micro_benchmark_controller_(this),
       next_ui_resource_id_(1),
       inside_begin_main_frame_(false),
       needs_full_tree_sync_(true),
       client_(client),
       source_frame_number_(0),
       rendering_stats_instrumentation_(RenderingStatsInstrumentation::Create()),
       output_surface_lost_(true),
-      num_failed_recreate_attempts_(0),
       settings_(settings),
       debug_state_(settings.initial_debug_state),
       top_controls_layout_height_(0.f),
       top_controls_content_offset_(0.f),
       device_scale_factor_(1.f),
       visible_(true),
       page_scale_factor_(1.f),
       min_page_scale_factor_(1.f),
       max_page_scale_factor_(1.f),
       has_gpu_rasterization_trigger_(false),
@@ skipping 81 matching lines @@
 }
 
 void LayerTreeHost::SetLayerTreeHostClientReady() {
   proxy_->SetLayerTreeHostClientReady();
 }
 
 static void LayerTreeHostOnOutputSurfaceCreatedCallback(Layer* layer) {
   layer->OnOutputSurfaceCreated();
 }
 
-void LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted(bool success) {
-  DCHECK(output_surface_lost_);
-  TRACE_EVENT1("cc",
-               "LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted",
-               "success",
-               success);
-
-  if (!success) {
-    // Tolerate a certain number of recreation failures to work around races
-    // in the output-surface-lost machinery.
-    ++num_failed_recreate_attempts_;
-    if (num_failed_recreate_attempts_ >= 5)
-      LOG(FATAL) << "Failed to create a fallback OutputSurface.";
-    client_->DidFailToInitializeOutputSurface();
-    return;
-  }
-
-  output_surface_lost_ = false;
-
-  if (!contents_texture_manager_ && !settings_.impl_side_painting) {
-    contents_texture_manager_ =
-        PrioritizedResourceManager::Create(proxy_.get());
-    surface_memory_placeholder_ =
-        contents_texture_manager_->CreateTexture(gfx::Size(), RGBA_8888);
-  }
-
-  if (root_layer()) {
-    LayerTreeHostCommon::CallFunctionForSubtree(
-        root_layer(), base::Bind(&LayerTreeHostOnOutputSurfaceCreatedCallback));
-  }
-
-  client_->DidInitializeOutputSurface();
-}
-
 void LayerTreeHost::DeleteContentsTexturesOnImplThread(
     ResourceProvider* resource_provider) {
   DCHECK(proxy_->IsImplThread());
   if (contents_texture_manager_)
     contents_texture_manager_->ClearAllMemory(resource_provider);
 }
 
 void LayerTreeHost::DidBeginMainFrame() {
   client_->DidBeginMainFrame();
 }
@@ skipping 162 matching lines @@
     hud_layer_ = NULL;
   }
 }
 
 void LayerTreeHost::CommitComplete() {
   source_frame_number_++;
   client_->DidCommit();
 }
 
 void LayerTreeHost::SetOutputSurface(scoped_ptr<OutputSurface> surface) {
+  TRACE_EVENT0("cc", "LayerTreeHost::SetOutputSurface");
+  DCHECK(output_surface_lost_);
+  DCHECK(surface);
+
   proxy_->SetOutputSurface(surface.Pass());
 }
 
 void LayerTreeHost::RequestNewOutputSurface() {
-  client_->RequestNewOutputSurface(num_failed_recreate_attempts_ >= 4);
+  client_->RequestNewOutputSurface();
+}
+
+void LayerTreeHost::DidInitializeOutputSurface() {
+  output_surface_lost_ = false;
+
+  if (!contents_texture_manager_ && !settings_.impl_side_painting) {
+    contents_texture_manager_ =
+        PrioritizedResourceManager::Create(proxy_.get());
+    surface_memory_placeholder_ =
+        contents_texture_manager_->CreateTexture(gfx::Size(), RGBA_8888);
+  }
+
+  if (root_layer()) {
+    LayerTreeHostCommon::CallFunctionForSubtree(
+        root_layer(), base::Bind(&LayerTreeHostOnOutputSurfaceCreatedCallback));
+  }
+
+  client_->DidInitializeOutputSurface();
+}
+
+void LayerTreeHost::DidFailToInitializeOutputSurface() {
+  DCHECK(output_surface_lost_);
+  client_->DidFailToInitializeOutputSurface();
 }
 
 scoped_ptr<LayerTreeHostImpl> LayerTreeHost::CreateLayerTreeHostImpl(
     LayerTreeHostImplClient* client) {
   DCHECK(proxy_->IsImplThread());
   scoped_ptr<LayerTreeHostImpl> host_impl =
       LayerTreeHostImpl::Create(settings_,
                                 client,
                                 proxy_.get(),
                                 rendering_stats_instrumentation_.get(),
@@ skipping 12 matching lines @@
   return host_impl.Pass();
 }
 
 void LayerTreeHost::DidLoseOutputSurface() {
   TRACE_EVENT0("cc", "LayerTreeHost::DidLoseOutputSurface");
   DCHECK(proxy_->IsMainThread());
 
   if (output_surface_lost_)
     return;
 
-  num_failed_recreate_attempts_ = 0;
   output_surface_lost_ = true;
   SetNeedsCommit();
 }
 
 void LayerTreeHost::FinishAllRendering() {
   proxy_->FinishAllRendering();
 }
 
 void LayerTreeHost::SetDeferCommits(bool defer_commits) {
   proxy_->SetDeferCommits(defer_commits);
@@ skipping 874 matching lines @@
     bool children_need_begin_frames) const {
   proxy_->SetChildrenNeedBeginFrames(children_need_begin_frames);
 }
 
 void LayerTreeHost::SendBeginFramesToChildren(
     const BeginFrameArgs& args) const {
   client_->SendBeginFramesToChildren(args);
 }
 
 }  // namespace cc