Remove scroll distribution code from Layer/LayerTreeHost.

cc/trees/layer_tree_host_unittest_pinch_zoom.cc

Index: cc/trees/layer_tree_host_unittest_pinch_zoom.cc
diff --git a/cc/trees/layer_tree_host_unittest_pinch_zoom.cc b/cc/trees/layer_tree_host_unittest_pinch_zoom.cc
deleted file mode 100644
index a77cbdccb9febd5581c61c62733b26a9b0f2ebca..0000000000000000000000000000000000000000
--- a/cc/trees/layer_tree_host_unittest_pinch_zoom.cc
+++ /dev/null
@@ -1,122 +0,0 @@
-// Copyright 2014 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 "base/memory/scoped_ptr.h"
-#include "cc/layers/layer.h"
-#include "cc/test/geometry_test_utils.h"
-#include "cc/test/layer_tree_test.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using gfx::Vector2d;
-
-namespace cc {
-namespace {
-
-class LayerTreeHostPinchZoomTest : public LayerTreeTest {};
-
-// Ensure that the DistributeScrollOffsetToViewports() method of LayerTreeHost
-// does not set values outside the scroll offset max.
-class LayerTreeHostPinchZoomTestDistributeScrollOffsetToViewports
-    : public LayerTreeHostPinchZoomTest {
- public:
-  // Sets up a 2X scale resulting in the following viewport configuration:
-  //    +------------------------------------------------+
-  //    |              |              |                  |
-  //    |              |              |                  |
-  //    |              |              |                  |
-  //    |  InnerClip   |5px           |                  |
-  //    |              |              |                  |
-  //    |              |              |10px              |
-  //    |--------------+              |                  |
-  //    |      5px                    |                  |
-  //    |                             |                  | 20px
-  //    | Inner Scroll/Outer Clip     |                  |
-  //    |                             |                  |
-  //    |-----------------------------+                  |
-  //    |             10px                               |
-  //    |                                                |
-  //    |                                                |
-  //    |                 Outer Scroll Layer             |
-  //    |                                                |
-  //    |                                                |
-  //    +------------------------------------------------+
-  //                         20px
-  //
-  virtual void SetupTree() OVERRIDE {
-    scoped_refptr<Layer> inner_viewport_clip_layer = Layer::Create();
-    scoped_refptr<Layer> page_scale_layer = Layer::Create();
-    scoped_refptr<Layer> inner_viewport_scroll_layer = Layer::Create();
-    scoped_refptr<Layer> outer_viewport_clip_layer = Layer::Create();
-    scoped_refptr<Layer> outer_viewport_scroll_layer = Layer::Create();
-
-    inner_viewport_scroll_layer->SetScrollClipLayerId(
-        inner_viewport_clip_layer->id());
-    inner_viewport_scroll_layer->SetUserScrollable(true, true);
-
-    inner_viewport_clip_layer->AddChild(page_scale_layer);
-    page_scale_layer->AddChild(inner_viewport_scroll_layer);
-
-    inner_viewport_scroll_layer->AddChild(outer_viewport_clip_layer);
-    outer_viewport_clip_layer->AddChild(outer_viewport_scroll_layer);
-
-    outer_viewport_scroll_layer->SetScrollClipLayerId(
-        outer_viewport_clip_layer->id());
-    outer_viewport_scroll_layer->SetUserScrollable(true, true);
-
-    layer_tree_host()->RegisterViewportLayers(page_scale_layer,
-        inner_viewport_scroll_layer,
-        outer_viewport_scroll_layer);
-
-    inner_viewport_clip_layer->SetBounds(gfx::Size(10, 10));
-    outer_viewport_clip_layer->SetAnchorPoint(gfx::PointF());
-    outer_viewport_clip_layer->SetBounds(gfx::Size(10, 10));
-
-    layer_tree_host()->SetRootLayer(inner_viewport_clip_layer);
-
-    inner_viewport_scroll_layer->SetBounds(gfx::Size(10, 10));
-    outer_viewport_scroll_layer->SetBounds(gfx::Size(20, 20));
-    layer_tree_host()->SetPageScaleFactorAndLimits(2.0f, 1.0f, 5.0f);
-
-    // Sanity check
-    EXPECT_VECTOR_EQ(Vector2d(5, 5),
-        inner_viewport_scroll_layer->MaxScrollOffset());
-    EXPECT_VECTOR_EQ(Vector2d(10, 10),
-        outer_viewport_scroll_layer->MaxScrollOffset());
-    EXPECT_VECTOR_EQ(Vector2d(0, 0),
-        inner_viewport_scroll_layer->scroll_offset());
-    EXPECT_VECTOR_EQ(Vector2d(0, 0),
-        outer_viewport_scroll_layer->scroll_offset());
-  }
-
-  virtual void BeginTest() OVERRIDE {
-    Layer *inner = layer_tree_host()->inner_viewport_scroll_layer();
-    Layer *outer = layer_tree_host()->outer_viewport_scroll_layer();
-
-    // Try to scroll beyond offset minium
-    gfx::Vector2d offset(-20, -20);
-    outer->SetScrollOffset(offset);
-    EXPECT_VECTOR_EQ(Vector2d(0, 0), inner->scroll_offset());
-    EXPECT_VECTOR_EQ(Vector2d(0, 0), outer->scroll_offset());
-
-    // Try to scroll beyond offset maximum
-    offset = gfx::Vector2d(20, 20);
-    outer->SetScrollOffset(offset);
-    EXPECT_VECTOR_EQ(Vector2d(5, 5), inner->scroll_offset());
-    EXPECT_VECTOR_EQ(Vector2d(10, 10), outer->scroll_offset());
-
-    EndTest();
-  }
-
-  virtual void AfterTest() OVERRIDE {}
-};
-
-TEST_F(LayerTreeHostPinchZoomTestDistributeScrollOffsetToViewports, Test) {
-    RunTest(true, false, false);
-}
-
-}  // namespace
-}  // namespace cc