[Presentation API] Adding a flag to disable gesture check for starting presentations

content/browser/renderer_host/render_view_host_impl.cc

 // Copyright (c) 2012 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/browser/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 509 matching lines @@
   prefs.strictly_block_blockable_mixed_content =
       blockable_mixed_content_group == "StrictlyBlockBlockableMixedContent";
 
   const std::string plugin_mixed_content_status =
       base::FieldTrialList::FindFullName("PluginMixedContentStatus");
   prefs.block_mixed_plugin_content =
       plugin_mixed_content_status == "BlockableMixedContent";
 
   prefs.v8_cache_options = GetV8CacheOptions();
 
+  prefs.user_gesture_required_for_presentation = !command_line.HasSwitch(
+      switches::kDisableGestureRequirementForPresentation);
+
   GetContentClient()->browser()->OverrideWebkitPrefs(this, &prefs);
   return prefs;
 }
 
 void RenderViewHostImpl::SuppressDialogsUntilSwapOut() {
   Send(new ViewMsg_SuppressDialogsUntilSwapOut(GetRoutingID()));
 }
 
 void RenderViewHostImpl::ClosePage() {
   is_waiting_for_close_ack_ = true;
@@ skipping 827 matching lines @@
 
 gfx::Point RenderViewHostImpl::ConvertDIPToViewport(const gfx::Point& point) {
   // The point in guest view is already converted.
   if (!render_widget_host_->scale_input_to_viewport())
     return point;
   float scale = GetWidget()->GetView()->current_device_scale_factor();
   return gfx::Point(point.x() * scale, point.y() * scale);
 }
 
 }  // namespace content