ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

ui/ozone/platform/egltest/ozone_platform_egltest.cc

Index: ui/ozone/platform/egltest/ozone_platform_egltest.cc
diff --git a/ui/ozone/platform/egltest/ozone_platform_egltest.cc b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
index adfadf99bba9cdd9e0fd62ea6e6f4d5b657107e1..de1f283a66be7df3ba9beddc843907b8d7e7a695 100644
--- a/ui/ozone/platform/egltest/ozone_platform_egltest.cc
+++ b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
@@ -26,8 +26,10 @@
 #include "ui/ozone/public/cursor_factory_ozone.h"
 #include "ui/ozone/public/gpu_platform_support.h"
 #include "ui/ozone/public/gpu_platform_support_host.h"
+#include "ui/ozone/public/ozone_client.h"
 #include "ui/ozone/public/ozone_platform.h"
 #include "ui/ozone/public/ozone_switches.h"
+#include "ui/ozone/public/surface_client_factory_ozone.h"
 #include "ui/ozone/public/surface_factory_ozone.h"
 #include "ui/ozone/public/surface_ozone_egl.h"
 #include "ui/ozone/public/system_input_injector.h"
@@ -400,6 +402,32 @@ class OzonePlatformEgltest : public OzonePlatform {
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformEgltest);
 };
 
+class OzoneClientEgltest : public OzoneClient {
+ public:
+  OzoneClientEgltest() {}
+  ~OzoneClientEgltest() override {}
+
+  // OzoneClient:
+  SurfaceClientFactoryOzone* GetSurfaceClientFactoryOzone() override {
+    return surface_client_.get();
+  }
+
+  void InitializeUI() override {
+    if (!surface_client_)
+      surface_client_.reset(new SurfaceClientFactoryOzone);
+  }
+
+  void InitializeRenderer() override {
+    if (!surface_client_)
+      surface_client_.reset(new SurfaceClientFactoryOzone);
+  }
+
+ private:
+  scoped_ptr<SurfaceClientFactoryOzone> surface_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(OzoneClientEgltest);
+};
+
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformEgltest() {
@@ -408,4 +436,8 @@ OzonePlatform* CreateOzonePlatformEgltest() {
   return platform;
 }
 
+OzoneClient* CreateOzoneClientEgltest() {
+  return new OzoneClientEgltest;
+}
+
 }  // namespace ui