Pinch/Zoom Infrastructure & Plumbing CL

content/test/web_layer_tree_view_impl_for_testing.cc

 // Copyright 2013 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 "content/test/web_layer_tree_view_impl_for_testing.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/switches.h"
@@ skipping 152 matching lines @@
       new cc::OutputSurface(cc::TestContextProvider::Create()));
 }
 
 scoped_refptr<cc::ContextProvider>
 WebLayerTreeViewImplForTesting::OffscreenContextProvider() {
   // Unit tests only run in single threaded mode.
   return webkit::gpu::TestContextProviderFactory::GetInstance()->
       OffscreenContextProviderForMainThread();
 }
 
+void WebLayerTreeViewImplForTesting::registerViewportLayers(
+    const blink::WebLayer* pageScaleLayer,
+    const blink::WebLayer* innerViewportScrollLayer,
+    const blink::WebLayer* outerViewportScrollLayer) {
+  layer_tree_host_->RegisterViewportLayers(
+      static_cast<const WebLayerImpl*>(pageScaleLayer)->layer(),
+      static_cast<const WebLayerImpl*>(innerViewportScrollLayer)
+          ->layer(),
+      // The outer viewport layer will only exist when using pinch virtual
+      // viewports.
+      outerViewportScrollLayer ? static_cast<const WebLayerImpl*>(
+                                     outerViewportScrollLayer)->layer()
+                               : NULL);
+}
+
+void WebLayerTreeViewImplForTesting::clearViewportLayers() {
+  layer_tree_host_->RegisterViewportLayers(scoped_refptr<cc::Layer>(),
+                                           scoped_refptr<cc::Layer>(),
+                                           scoped_refptr<cc::Layer>());
+}
+
 }  // namespace webkit