Adds public API and loads Cast OSD plane implementation from shared lib

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 "base/callback_helpers.h"
 #include "chromecast/public/cast_egl_platform.h"
+#include "chromecast/public/graphics_types.h"
 #include "ui/ozone/platform/cast/surface_ozone_egl_cast.h"
 
 using chromecast::CastEglPlatform;
 
 namespace ui {
 namespace {
-CastEglPlatform::Size FromGfxSize(const gfx::Size& size) {
-  return CastEglPlatform::Size(size.width(), size.height());
+chromecast::Size FromGfxSize(const gfx::Size& size) {
+  return chromecast::Size(size.width(), size.height());
 }
 
 // Hard lower bound on display resolution
 gfx::Size GetMinDisplaySize() {
   return gfx::Size(1280, 720);
 }
 
 }  // namespace
 
 SurfaceFactoryCast::SurfaceFactoryCast(scoped_ptr<CastEglPlatform> egl_platform)
@@ skipping 41 matching lines @@
 void SurfaceFactoryCast::CreateDisplayTypeAndWindowIfNeeded() {
   if (state_ == kUninitialized) {
     InitializeHardware();
   }
   if (new_display_size_ != display_size_) {
     DestroyDisplayTypeAndWindow();
     display_size_ = new_display_size_;
   }
   DCHECK_EQ(state_, kInitialized);
   if (!have_display_type_) {
-    CastEglPlatform::Size create_size = FromGfxSize(display_size_);
+    chromecast::Size create_size = FromGfxSize(display_size_);
     display_type_ = egl_platform_->CreateDisplayType(create_size);
     have_display_type_ = true;
     window_ = egl_platform_->CreateWindow(display_type_, create_size);
     if (!window_) {
       DestroyDisplayTypeAndWindow();
       state_ = kFailed;
       LOG(FATAL) << "Create EGLNativeWindowType(" << display_size_.ToString()
                  << ") failed.";
     }
   }
@@ skipping 95 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