Adding status to swap complete

ui/gl/gl_surface_egl.h

Index: ui/gl/gl_surface_egl.h
diff --git a/ui/gl/gl_surface_egl.h b/ui/gl/gl_surface_egl.h
index 21669d74bb7f25fed815618c829620832494d650..a89fec6244d7a1fc0dd67504787ca452d6b8127d 100644
--- a/ui/gl/gl_surface_egl.h
+++ b/ui/gl/gl_surface_egl.h
@@ -68,11 +68,11 @@ class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
   bool Resize(const gfx::Size& size) override;
   bool Recreate() override;
   bool IsOffscreen() override;
-  bool SwapBuffers() override;
+  gfx::SwapResult SwapBuffers() override;
   gfx::Size GetSize() override;
   EGLSurface GetHandle() override;
   bool SupportsPostSubBuffer() override;
-  bool PostSubBuffer(int x, int y, int width, int height) override;
+  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
   VSyncProvider* GetVSyncProvider() override;
 
   // Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
@@ -118,7 +118,7 @@ class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
   bool Initialize() override;
   void Destroy() override;
   bool IsOffscreen() override;
-  bool SwapBuffers() override;
+  gfx::SwapResult SwapBuffers() override;
   gfx::Size GetSize() override;
   bool Resize(const gfx::Size& size) override;
   EGLSurface GetHandle() override;
@@ -147,7 +147,7 @@ class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
   void Destroy() override;
   bool IsOffscreen() override;
   bool IsSurfaceless() const override;
-  bool SwapBuffers() override;
+  gfx::SwapResult SwapBuffers() override;
   gfx::Size GetSize() override;
   bool Resize(const gfx::Size& size) override;
   EGLSurface GetHandle() override;