[Chromecast] Support software rendering when disable-gpu used

ui/ozone/platform/cast/surface_factory_cast.cc

Index: ui/ozone/platform/cast/surface_factory_cast.cc
diff --git a/ui/ozone/platform/cast/surface_factory_cast.cc b/ui/ozone/platform/cast/surface_factory_cast.cc
index 4d5c57e020ce644111d1fdb0e02fcb51b7c375a1..29ee30a525953441a4610947c9c065d2f2c448eb 100644
--- a/ui/ozone/platform/cast/surface_factory_cast.cc
+++ b/ui/ozone/platform/cast/surface_factory_cast.cc
@@ -10,9 +10,12 @@
 #include "base/callback_helpers.h"
 #include "chromecast/public/cast_egl_platform.h"
 #include "chromecast/public/graphics_types.h"
+#include "third_party/skia/include/core/SkSurface.h"
 #include "ui/gfx/geometry/quad_f.h"
+#include "ui/gfx/vsync_provider.h"
 #include "ui/ozone/platform/cast/surface_ozone_egl_cast.h"
 #include "ui/ozone/public/native_pixmap.h"
+#include "ui/ozone/public/surface_ozone_canvas.h"
 
 using chromecast::CastEglPlatform;
 
@@ -37,8 +40,39 @@ gfx::Size GetMinDisplaySize() {
   return gfx::Size(1280, 720);
 }
 
+class DummySurface : public SurfaceOzoneCanvas {
+ public:
+  DummySurface() {}
+  ~DummySurface() override {}
+
+  // SurfaceOzoneCanvas implementation:
+  skia::RefPtr<SkSurface> GetSurface() override { return surface_; }
+
+  void ResizeCanvas(const gfx::Size& viewport_size) override {
+    surface_ = skia::AdoptRef(SkSurface::NewRaster(SkImageInfo::MakeN32Premul(
+        viewport_size.width(), viewport_size.height())));
+  }
+
+  void PresentCanvas(const gfx::Rect& damage) override {}
+
+  scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() override {
+    return nullptr;
+  }
+
+ private:

[slan, 2015/12/08 22:40:25]

nit: DISALLOW....

[halliwell, 2015/12/08 23:27:56]

Done.

+  skia::RefPtr<SkSurface> surface_;
+};
+
 }  // namespace
 
+SurfaceFactoryCast::SurfaceFactoryCast()

[derekjchow1, 2015/12/08 22:03:15]

Can this call the constructor on line 76 and pass in nullptr for |egl_platform|?

[slan, 2015/12/08 22:40:25]

+1, now valid in chrome to forward.

[halliwell, 2015/12/08 23:27:56]

Done.

+    : state_(kUninitialized),
+      display_type_(0),
+      have_display_type_(false),
+      window_(0),
+      display_size_(GetInitialDisplaySize()),
+      new_display_size_(GetInitialDisplaySize()) {}
+
 SurfaceFactoryCast::SurfaceFactoryCast(scoped_ptr<CastEglPlatform> egl_platform)
     : state_(kUninitialized),
       display_type_(0),
@@ -97,6 +131,14 @@ void SurfaceFactoryCast::ShutdownHardware() {
   state_ = kUninitialized;
 }
 
+scoped_ptr<SurfaceOzoneCanvas> SurfaceFactoryCast::CreateCanvasForWidget(
+    gfx::AcceleratedWidget w) {
+  // Software canvas support only in headless mode
+  if (egl_platform_)
+    return nullptr;
+  return make_scoped_ptr<SurfaceOzoneCanvas>(new DummySurface());
+}
+
 intptr_t SurfaceFactoryCast::GetNativeDisplay() {
   CreateDisplayTypeAndWindowIfNeeded();
   return reinterpret_cast<intptr_t>(display_type_);