[Android WebView] Implement WebSettings.{get|set}LoadWithOverviewMode

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index c3d9e24408379689039c34b0b94bb39490274746..fdfa794ccc1e65f3e9100ddba13bb1e569e84b01 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -5332,9 +5332,16 @@ void RenderViewImpl::OnDragSourceSystemDragEnded() {
   webview()->dragSourceSystemDragEnded();
 }
 
+
 void RenderViewImpl::OnUpdateWebPreferences(const WebPreferences& prefs) {
+  const bool old_initialize_at_minimum_page_scale =
+      webkit_preferences_.initialize_at_minimum_page_scale;
   webkit_preferences_ = prefs;
   webkit_preferences_.Apply(webview());
+  if (old_initialize_at_minimum_page_scale !=
+      webkit_preferences_.initialize_at_minimum_page_scale) {
+    webview()->resetScrollAndScaleState();
+  }
 }
 
 void RenderViewImpl::OnUpdateTimezone() {