[Ozone] Enables overlay render format setting path and by default use UYVY

ui/ozone/platform/cast/surface_factory_cast.cc

 // Copyright 2015 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 "ui/ozone/platform/cast/surface_factory_cast.h"
 
 #include <dlfcn.h>
 #include <EGL/egl.h>
 
 #include "base/callback_helpers.h"
@@ skipping 172 matching lines @@
   class CastPixmap : public NativePixmap {
    public:
     CastPixmap() {}
 
     void* GetEGLClientBuffer() override {
       // TODO(halliwell): try to implement this through CastEglPlatform.
       return nullptr;
     }
     int GetDmaBufFd() override { return 0; }
     int GetDmaBufPitch() override { return 0; }
+    gfx::BufferFormat GetBufferFormat() override {
+      return gfx::BufferFormat::LAST;
+    }
     bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                               int plane_z_order,
                               gfx::OverlayTransform plane_transform,
                               const gfx::Rect& display_bounds,
                               const gfx::RectF& crop_rect) override {
       return true;
     }
-    void SetScalingCallback(const ScalingCallback& scaling_callback) override {}
-    scoped_refptr<NativePixmap> GetScaledPixmap(gfx::Size new_size) override {
+    void SetProcessingCallback(
+        const ProcessingCallback& processing_callback) override {}
+    scoped_refptr<NativePixmap> GetProcessedPixmap(
+        gfx::Size target_size,
+        gfx::BufferFormat target_format) override {
       return nullptr;
     }
     gfx::NativePixmapHandle ExportHandle() override {
       return gfx::NativePixmapHandle();
     }
 
    private:
     ~CastPixmap() override {}
 
     DISALLOW_COPY_AND_ASSIGN(CastPixmap);
@@ skipping 18 matching lines @@
     return false;
   }
 
   set_gl_get_proc_address.Run(gl_proc);
   add_gl_library.Run(lib_egl);
   add_gl_library.Run(lib_gles2);
   return true;
 }
 
 }  // namespace ui