Support device scale factor test with popups in LayoutTest

content/shell/browser/shell.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/shell/browser/shell.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/common/webrtc_ip_handling_policy.h"
 #include "content/shell/browser/blink_test_controller.h"
 #include "content/shell/browser/layout_test/layout_test_bluetooth_chooser_factory.h"
 #include "content/shell/browser/layout_test/layout_test_devtools_frontend.h"
 #include "content/shell/browser/layout_test/layout_test_javascript_dialog_manager.h"
 #include "content/shell/browser/notify_done_forwarder.h"
 #include "content/shell/browser/shell_browser_main_parts.h"
 #include "content/shell/browser/shell_content_browser_client.h"
 #include "content/shell/browser/shell_devtools_frontend.h"
 #include "content/shell/browser/shell_javascript_dialog_manager.h"
 #include "content/shell/common/shell_messages.h"
 #include "content/shell/common/shell_switches.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/switches.h"
+
+#if defined(USE_X11) && !defined(OS_CHROMEOS)
+#include "ui/views/widget/desktop_aura/desktop_screen_x11.h"
+#endif
 
 namespace content {
 
 const int kDefaultTestWindowWidthDip = 800;
 const int kDefaultTestWindowHeightDip = 600;
 
 std::vector<Shell*> Shell::windows_;
 base::Callback<void(Shell*)> Shell::shell_created_callback_;
 
 bool Shell::quit_message_loop_ = true;
@@ skipping 329 matching lines @@
 }
 
 void Shell::ActivateContents(WebContents* contents) {
   contents->GetRenderViewHost()->GetWidget()->Focus();
 }
 
 bool Shell::HandleContextMenu(const content::ContextMenuParams& params) {
   return PlatformHandleContextMenu(params);
 }
 
+void Shell::SetDeviceScaleFactor(float scale) {
+#if !defined(OS_CHROMEOS)
+  gfx::Display::ResetForceDeviceScaleFactorForTesting();
+  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+      switches::kForceDeviceScaleFactor, base::StringPrintf("%f", scale));
+#if defined(USE_X11)
+  views::DesktopScreenX11::UpdateDeviceScaleFactorForTest();
+#endif
+#endif
+  RenderWidgetHostView* host_view = web_contents_->GetRenderWidgetHostView();
+  host_view->SetSize(host_view->GetViewBounds().size());
+}
+
 gfx::Size Shell::GetShellDefaultSize() {
   static gfx::Size default_shell_size;
   if (!default_shell_size.IsEmpty())
     return default_shell_size;
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kContentShellHostWindowSize)) {
     const std::string size_str = command_line->GetSwitchValueASCII(
                   switches::kContentShellHostWindowSize);
     int width, height;
     CHECK_EQ(2, sscanf(size_str.c_str(), "%dx%d", &width, &height));
@@ skipping 20 matching lines @@
   devtools_frontend_->Activate();
   devtools_frontend_->Focus();
 }
 
 void Shell::OnDevToolsWebContentsDestroyed() {
   devtools_observer_.reset();
   devtools_frontend_ = NULL;
 }
 
 }  // namespace content