cc: remove the veto-to-software for complex content.

cc/trees/layer_tree_host_impl.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_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1804 matching lines @@
     gpu_rasterization_status_ = GpuRasterizationStatus::ON_FORCED;
     use_msaa = !content_is_suitable_for_gpu_rasterization_ &&
                using_msaa_for_complex_content;
     if (use_msaa) {
       gpu_rasterization_status_ = GpuRasterizationStatus::MSAA_CONTENT;
     }
   } else if (!gpu_rasterization_enabled) {
     gpu_rasterization_status_ = GpuRasterizationStatus::OFF_DEVICE;
   } else if (!has_gpu_rasterization_trigger_) {
     gpu_rasterization_status_ = GpuRasterizationStatus::OFF_VIEWPORT;
-  } else if (content_is_suitable_for_gpu_rasterization_) {
-    use_gpu = true;
-    gpu_rasterization_status_ = GpuRasterizationStatus::ON;
-  } else if (using_msaa_for_complex_content) {
+  } else if (!content_is_suitable_for_gpu_rasterization_ &&

[enne (OOO), 2017/04/05 22:20:09]

Sorry to bikeshed, but maybe this should be called something else?
content_needs_msaa_for_gpu_raster_? content_has_too_many_slow_paths_ugh_gosh_?

+             using_msaa_for_complex_content) {
     use_gpu = use_msaa = true;
     gpu_rasterization_status_ = GpuRasterizationStatus::MSAA_CONTENT;
   } else {
-    gpu_rasterization_status_ = GpuRasterizationStatus::OFF_CONTENT;
+    use_gpu = true;
+    gpu_rasterization_status_ = GpuRasterizationStatus::ON;
   }
 
   if (use_gpu && !use_gpu_rasterization_) {
     if (!CanUseGpuRasterization()) {
       // If GPU rasterization is unusable, e.g. if GlContext could not
       // be created due to losing the GL context, force use of software
       // raster.
       use_gpu = false;
       use_msaa = false;
       gpu_rasterization_status_ = GpuRasterizationStatus::OFF_DEVICE;
@@ skipping 2432 matching lines @@
       worker_context_visibility_ =
           worker_context->CacheController()->ClientBecameVisible();
     } else {
       worker_context->CacheController()->ClientBecameNotVisible(
           std::move(worker_context_visibility_));
     }
   }
 }
 
 }  // namespace cc