Initialize the EGL surface to the window size on Win

On other platforms, the EGL surface's starting size is that of the window, so that should be done on Windows as well.

BUG=358870

Review URL: https://codereview.chromium.org/224493002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261592 0039d316-1c4b-4281-b951-d872f2087c98

ui/gl/gl_surface_egl.cc

@@ -18,6 +18,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "build/build_config.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gl/egl_util.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
@@ -320,6 +321,12 @@ NativeViewGLSurfaceEGL::NativeViewGLSurfaceEGL(EGLNativeWindowType window)
   if (window)
     ANativeWindow_acquire(window);
 #endif
+
+#if defined(OS_WIN)
+  RECT windowRect;
+  if (GetClientRect(window_, &windowRect))
+    size_ = gfx::Rect(windowRect).size();
+#endif
 }
 
 bool NativeViewGLSurfaceEGL::Initialize() {