Hide location bar on WebKit programmatic scroll.

cc/layer_tree_host.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/layer_tree_host.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
@@ skipping 453 matching lines @@
 
     if (LayerTreeDebugState::equal(m_debugState, newDebugState))
         return;
 
     m_debugState = newDebugState;
     setNeedsCommit();
 }
 
 void LayerTreeHost::setViewportSize(const gfx::Size& layoutViewportSize, const gfx::Size& deviceViewportSize)
 {
-    if (layoutViewportSize == m_layoutViewportSize && deviceViewportSize == m_deviceViewportSize)
+    gfx::Size mutatedDeviceViewportSize(deviceViewportSize);
+    if (m_settings.calculateTopControlsPosition)
+        mutatedDeviceViewportSize.Enlarge(0, m_settings.topControlsHeightPx);
+
+    if (layoutViewportSize == m_layoutViewportSize && mutatedDeviceViewportSize == m_deviceViewportSize)
         return;
-
+  
     m_layoutViewportSize = layoutViewportSize;
-    m_deviceViewportSize = deviceViewportSize;
-
+    m_deviceViewportSize = mutatedDeviceViewportSize;
+  
     setNeedsCommit();
 }
 
 void LayerTreeHost::setPageScaleFactorAndLimits(float pageScaleFactor, float minPageScaleFactor, float maxPageScaleFactor)
 {
     if (pageScaleFactor == m_pageScaleFactor && minPageScaleFactor == m_minPageScaleFactor && maxPageScaleFactor == m_maxPageScaleFactor)
         return;
 
     m_pageScaleFactor = pageScaleFactor;
     m_minPageScaleFactor = minPageScaleFactor;
     m_maxPageScaleFactor = maxPageScaleFactor;
     setNeedsCommit();
 }
 
+void LayerTreeHost::programmaticScroll(gfx::Vector2d targetOffset)
+{
+    m_proxy->programmaticScroll(targetOffset);
+}
+
 void LayerTreeHost::setVisible(bool visible)
 {
     if (m_visible == visible)
         return;
     m_visible = visible;
     m_proxy->setVisible(visible);
 }
 
 void LayerTreeHost::startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration)
 {
@@ skipping 373 matching lines @@
     for (size_t childIndex = 0; childIndex < layer->children().size(); ++childIndex)
         setAnimationEventsRecursive(events, layer->children()[childIndex].get(), wallClockTime);
 }
 
 skia::RefPtr<SkPicture> LayerTreeHost::capturePicture()
 {
     return m_proxy->capturePicture();
 }
 
 }  // namespace cc