Reland of Move scaling of ui resources for scrollbars to the time of upload

cc/layers/scrollbar_layer_unittest.cc

Index: cc/layers/scrollbar_layer_unittest.cc
diff --git a/cc/layers/scrollbar_layer_unittest.cc b/cc/layers/scrollbar_layer_unittest.cc
index 3b71cc055f40acdd7a3b48cc2f17c32040fc8db8..2ecec0772f324cce44baecb686500653e2eb1a5e 100644
--- a/cc/layers/scrollbar_layer_unittest.cc
+++ b/cc/layers/scrollbar_layer_unittest.cc
@@ -26,6 +26,7 @@
 #include "cc/test/layer_tree_test.h"
 #include "cc/test/mock_occlusion_tracker.h"
 #include "cc/test/stub_layer_tree_host_single_thread_client.h"
+#include "cc/test/test_context_provider.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/test/test_web_graphics_context_3d.h"
 #include "cc/trees/effect_node.h"
@@ -740,60 +741,6 @@
             vertical_scrollbar_layer_->ComputeThumbQuadRect());
 }
 
-class ScrollbarLayerTestWithFixedScrollbarBounds : public LayerTreeTest {
- public:
-  ScrollbarLayerTestWithFixedScrollbarBounds() {}
-
-  void SetScrollbarBounds(const gfx::Size& bounds) { bounds_ = bounds; }
-
-  void BeginTest() override {
-    scroll_layer_ = Layer::Create();
-    layer_tree()->root_layer()->AddChild(scroll_layer_);
-
-    std::unique_ptr<Scrollbar> scrollbar(new FakeScrollbar);
-    scrollbar_layer_ = PaintedScrollbarLayer::Create(std::move(scrollbar),
-                                                     scroll_layer_->id());
-    scrollbar_layer_->SetScrollLayer(scroll_layer_->id());
-    scrollbar_layer_->SetLayerTreeHost(layer_tree_host());
-    scrollbar_layer_->SetBounds(bounds_);
-    scrollbar_layer_->SetIsDrawable(true);
-    layer_tree()->root_layer()->AddChild(scrollbar_layer_);
-
-    PostSetNeedsCommitToMainThread();
-  }
-
-  void DidCommitAndDrawFrame() override {
-    const int kMaxTextureSize =
-        layer_tree_host()->GetRendererCapabilities().max_texture_size;
-
-    // Check first that we're actually testing something.
-    EXPECT_GT(scrollbar_layer_->bounds().width(), kMaxTextureSize);
-
-    EXPECT_EQ(scrollbar_layer_->internal_content_bounds().width(),
-              kMaxTextureSize - 1);
-    EXPECT_EQ(scrollbar_layer_->internal_content_bounds().height(),
-              kMaxTextureSize - 1);
-
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
- private:
-  scoped_refptr<PaintedScrollbarLayer> scrollbar_layer_;
-  scoped_refptr<Layer> scroll_layer_;
-  gfx::Size bounds_;
-};
-
-TEST_F(ScrollbarLayerTestWithFixedScrollbarBounds, MaxTextureSize) {
-  std::unique_ptr<TestWebGraphicsContext3D> context =
-      TestWebGraphicsContext3D::Create();
-  int max_size = 0;
-  context->getIntegerv(GL_MAX_TEXTURE_SIZE, &max_size);
-  SetScrollbarBounds(gfx::Size(max_size + 100, max_size + 100));
-  RunTest(CompositorMode::THREADED);
-}
-
 class ScrollbarLayerTestResourceCreationAndRelease : public ScrollbarLayerTest {
  public:
   void TestResourceUpload(int num_updates,
@@ -1027,7 +974,6 @@
     scrollbar_layer->set_visible_layer_rect(
         gfx::Rect(scrollbar_location, scrollbar_layer->bounds()));
 
-    testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
     EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
 
     layer_tree_->SetDeviceScaleFactor(test_scale);
@@ -1051,16 +997,6 @@
               scrollbar_layer->internal_content_bounds().width());
     EXPECT_LE(thumb_size.height(),
               scrollbar_layer->internal_content_bounds().height());
-    EXPECT_LE(track_size.width(),
-              layer_tree_host_->GetRendererCapabilities().max_texture_size);
-    EXPECT_LE(track_size.height(),
-              layer_tree_host_->GetRendererCapabilities().max_texture_size);
-    EXPECT_LE(thumb_size.width(),
-              layer_tree_host_->GetRendererCapabilities().max_texture_size);
-    EXPECT_LE(thumb_size.height(),
-              layer_tree_host_->GetRendererCapabilities().max_texture_size);
-
-    testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
   }
 };
 
@@ -1071,8 +1007,13 @@
   TestResourceUpload(1.41f);
   TestResourceUpload(4.1f);
 
-  // Try something extreme to make sure it gets clamped.
-  TestResourceUpload(2147483647.0f);
+  // Try something extreme to be larger than max texture size, and make it a
+  // non-integer for funsies.
+  scoped_refptr<TestContextProvider> context = TestContextProvider::Create();
+  context->BindToCurrentThread();
+  int max_texture_size = 0;
+  context->ContextGL()->GetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
+  TestResourceUpload(max_texture_size / 9.9f);
 }
 
 class ScaledScrollbarLayerTestScaledRasterization : public ScrollbarLayerTest {