Store rotation/ui scale to local state.

chromeos/display/output_configurator.h

Index: chromeos/display/output_configurator.h
diff --git a/chromeos/display/output_configurator.h b/chromeos/display/output_configurator.h
index f65a6cc96360736332f237a064fdf6b1253e3fc2..1214f5e7259fbc334399620a1b82116d797a74d2 100644
--- a/chromeos/display/output_configurator.h
+++ b/chromeos/display/output_configurator.h
@@ -62,6 +62,14 @@ class CHROMEOS_EXPORT OutputConfigurator : public MessageLoop::Dispatcher {
     virtual void OnDisplayModeChangeFailed(OutputState failed_new_state) {}
   };
 
+  class Delegate {
+   public:
+    // Called when displays are detected first time. This is to allow
+    // chrome to select the display mode when started.
+    virtual OutputState GetStateForOutputs(
+        const std::vector<RROutput>& outputs) const = 0;
+  };
+
   OutputConfigurator();
   virtual ~OutputConfigurator();
 
@@ -69,6 +77,8 @@ class CHROMEOS_EXPORT OutputConfigurator : public MessageLoop::Dispatcher {
 
   OutputState output_state() const { return output_state_; }
 
+  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
+
   // Initialization, must be called right after constructor.
   // |is_panel_fitting_enabled| indicates hardware panel fitting support.
   // If |background_color_argb| is non zero and there are multiple displays,
@@ -172,12 +182,21 @@ class CHROMEOS_EXPORT OutputConfigurator : public MessageLoop::Dispatcher {
   // Updates |mirror_mode_preserved_aspect_| and |last_enter_state_time_|.
   void RecordPreviousStateUMA();
 
+  // Returns next state.
+  OutputState GetNextState(Display* display,
+                           XRRScreenResources* screen,
+                           OutputState current_state,
+                           const std::vector<OutputSnapshot>& outputs) const;
+
+
   // Tells if the output specified by |output_info| is for internal display.
   static bool IsInternalOutput(const XRROutputInfo* output_info);
 
   // Returns output's native mode, None if not found.
   static RRMode GetOutputNativeMode(const XRROutputInfo* output_info);
 
+  Delegate* delegate_;
+
   // This is detected by the constructor to determine whether or not we should
   // be enabled.  If we aren't running on ChromeOS, we can't assume that the
   // Xrandr X11 extension is supported.