Remove scroll_delta flooring hack

cc/trees/layer_tree_host_unittest.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 "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 5524 matching lines @@
     PostSetNeedsCommitToMainThread();
   }
 
   void BeginMainFrame(const BeginFrameArgs& args) override {
     EXPECT_EQ(nullptr, layer_tree_host()->root_layer());
 
     layer_tree_host()->ApplyScrollAndScale(&info_);
     EndTest();
   }
 
-  void ApplyViewportDeltas(const gfx::Vector2d& inner,
-                           const gfx::Vector2d& outer,
+  void ApplyViewportDeltas(const gfx::Vector2dF& inner,
+                           const gfx::Vector2dF& outer,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float scale_delta,
                            float top_controls_delta) override {
     EXPECT_EQ(info_.page_scale_delta, scale_delta);
     EXPECT_EQ(info_.top_controls_delta, top_controls_delta);
     deltas_sent_to_client_ = true;
   }
 
   void ApplyViewportDeltas(
       const gfx::Vector2d& scroll,
@@ skipping 705 matching lines @@
 
   void AfterTest() override { EXPECT_TRUE(did_commit_); }
 
  private:
   bool did_commit_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestNoTasksBetweenWillAndDidCommit);
 
 }  // namespace cc