WIP: Fix foreignObject cullrect

cc/test/fake_display_list_raster_source.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 "cc/test/fake_display_list_raster_source.h"
 
 #include <limits>
 
 #include "base/synchronization/waitable_event.h"
 #include "cc/test/fake_display_list_recording_source.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace cc {
 
 scoped_refptr<FakeDisplayListRasterSource>
 FakeDisplayListRasterSource::CreateInfiniteFilled() {
   gfx::Size size(std::numeric_limits<int>::max() / 10,
                  std::numeric_limits<int>::max() / 10);
   return CreateFilled(size);
 }
 
 scoped_refptr<FakeDisplayListRasterSource>
 FakeDisplayListRasterSource::CreateFilled(const gfx::Size& size) {
   auto recording_source =
       FakeDisplayListRecordingSource::CreateFilledRecordingSource(size);
 
-  SkPaint red_paint;
-  red_paint.setColor(SK_ColorRED);
-  recording_source->add_draw_rect_with_paint(gfx::Rect(size), red_paint);
-
-  gfx::Size smaller_size(size.width() - 10, size.height() - 10);
-  SkPaint green_paint;
-  green_paint.setColor(SK_ColorGREEN);
-  recording_source->add_draw_rect_with_paint(gfx::Rect(smaller_size),
-                                             green_paint);
+  SkPaint salmon_pink_paint;
+  salmon_pink_paint.setColor(SK_ColorRED);
+  // Set an arbitrary non-opaque alpha in order to force the source non-solid.
+  // There are a number of ways to ensure the raster source is not solid. This
+  // is just one of them.
+  salmon_pink_paint.setAlpha(127);
+  recording_source->add_draw_rect_with_paint(gfx::Rect(size),
+                                             salmon_pink_paint);
 
   recording_source->Rerecord();
 
   return make_scoped_refptr(
       new FakeDisplayListRasterSource(recording_source.get(), false));
 }
 
 scoped_refptr<FakeDisplayListRasterSource>
 FakeDisplayListRasterSource::CreateFilledLCD(const gfx::Size& size) {
   auto recording_source =
@@ skipping 104 matching lines @@
     float contents_scale,
     bool include_images) const {
   if (playback_allowed_event_)
     playback_allowed_event_->Wait();
   DisplayListRasterSource::PlaybackToCanvas(canvas, canvas_bitmap_rect,
                                             canvas_playback_rect,
                                             contents_scale, include_images);
 }
 
 }  // namespace cc