Prevent use of GPU IDC in Resourceless Software Draw

cc/output/software_renderer.cc

 // Copyright 2012 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/output/software_renderer.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 38 matching lines @@
          SkScalarNearlyZero(matrix[SkMatrix::kMPersp1]) &&
          SkScalarNearlyZero(matrix[SkMatrix::kMPersp2] - 1.0f);
 }
 
 }  // anonymous namespace
 
 std::unique_ptr<SoftwareRenderer> SoftwareRenderer::Create(
     RendererClient* client,
     const RendererSettings* settings,
     OutputSurface* output_surface,
-    ResourceProvider* resource_provider) {
+    ResourceProvider* resource_provider,
+    bool use_image_hijack_canvas) {
   return base::WrapUnique(new SoftwareRenderer(client, settings, output_surface,
-                                               resource_provider));
+                                               resource_provider,
+                                               use_image_hijack_canvas));
 }
 
 SoftwareRenderer::SoftwareRenderer(RendererClient* client,
                                    const RendererSettings* settings,
                                    OutputSurface* output_surface,
-                                   ResourceProvider* resource_provider)
+                                   ResourceProvider* resource_provider,
+                                   bool use_image_hijack_canvas)
     : DirectRenderer(client, settings, output_surface, resource_provider),
       is_scissor_enabled_(false),
       is_backbuffer_discarded_(false),
       output_device_(output_surface->software_device()),
-      current_canvas_(NULL) {
+      current_canvas_(nullptr),
+      use_image_hijack_canvas_(use_image_hijack_canvas) {
   if (resource_provider_) {
     capabilities_.max_texture_size = resource_provider_->max_texture_size();
     capabilities_.best_texture_format =
         resource_provider_->best_texture_format();
   }
   // The updater can access bitmaps while the SoftwareRenderer is using them.
   capabilities_.allow_partial_texture_updates = true;
   capabilities_.using_partial_swap = true;
 
   capabilities_.using_shared_memory_resources = true;
@@ skipping 278 matching lines @@
 
   const bool needs_transparency =
       SkScalarRoundToInt(quad->shared_quad_state->opacity * 255) < 255;
   const bool disable_image_filtering =
       frame->disable_picture_quad_image_filtering || quad->nearest_neighbor;
 
   TRACE_EVENT0("cc", "SoftwareRenderer::DrawPictureQuad");
 
   RasterSource::PlaybackSettings playback_settings;
   playback_settings.playback_to_shared_canvas = true;
+  playback_settings.use_image_hijack_canvas = use_image_hijack_canvas_;
   if (needs_transparency || disable_image_filtering) {
     // TODO(aelias): This isn't correct in all cases. We should detect these
     // cases and fall back to a persistent bitmap backing
     // (http://crbug.com/280374).
     // TODO(vmpstr): Fold this canvas into playback and have raster source
     // accept a set of settings on playback that will determine which canvas to
     // apply. (http://crbug.com/594679)
     skia::OpacityFilterCanvas filtered_canvas(current_canvas_,
                                               quad->shared_quad_state->opacity,
                                               disable_image_filtering);
@@ skipping 365 matching lines @@
       ApplyImageFilter(filter.get(), quad, backdrop_bitmap, nullptr);
 
   if (!filter_backdrop_image)
     return nullptr;
 
   return filter_backdrop_image->makeShader(content_tile_mode, content_tile_mode,
                                            &filter_backdrop_transform);
 }
 
 }  // namespace cc