Support ResizeSynchronously for device emulation in tests.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 773a0701c9959b9e6bf76ec4b5e5e82b07baca0a..240e69d0461b75eb2653d34635db33a69f57aea7 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -181,6 +181,7 @@ class RenderWidget::ScreenMetricsEmulator {
   // The following methods alter handlers' behavior for messages related to
   // widget size and position.
   void OnResizeMessage(const ViewMsg_Resize_Params& params);
+  void ResizeSynchronously(const gfx::Rect& rect);
   void OnUpdateScreenRectsMessage(const gfx::Rect& view_screen_rect,
                                   const gfx::Rect& window_screen_rect);
   void OnShowContextMenu(ContextMenuParams* params);
@@ -335,6 +336,14 @@ void RenderWidget::ScreenMetricsEmulator::OnResizeMessage(
   }
 }
 
+void RenderWidget::ScreenMetricsEmulator::ResizeSynchronously(
+    const gfx::Rect& rect) {
+  original_size_ = rect.size();
+  original_view_screen_rect_ = rect;
+  original_window_screen_rect_ = rect;
+  Reapply();
+}
+
 void RenderWidget::ScreenMetricsEmulator::OnUpdateScreenRectsMessage(
     const gfx::Rect& view_screen_rect,
     const gfx::Rect& window_screen_rect) {
@@ -694,10 +703,14 @@ void RenderWidget::Resize(const gfx::Size& new_size,
 }
 
 void RenderWidget::ResizeSynchronously(const gfx::Rect& new_position) {
-  Resize(new_position.size(), new_position.size(), overdraw_bottom_height_,
-         visible_viewport_size_, gfx::Rect(), is_fullscreen_, NO_RESIZE_ACK);
-  view_screen_rect_ = new_position;
-  window_screen_rect_ = new_position;
+  if (screen_metrics_emulator_) {
+    screen_metrics_emulator_->ResizeSynchronously(new_position);
+  } else {
+    Resize(new_position.size(), new_position.size(), overdraw_bottom_height_,
+           visible_viewport_size_, gfx::Rect(), is_fullscreen_, NO_RESIZE_ACK);
+    view_screen_rect_ = new_position;
+    window_screen_rect_ = new_position;
+  }
   if (!did_show_)
     initial_pos_ = new_position;
 }