Implemented GetWindowSnapshot on RenderViewImpl

ui/snapshot/snapshot_ios.mm

+// Copyright (c) 2012 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/snapshot/snapshot.h"
+
+#include "ui/gfx/rect.h"
+
+namespace ui {
+
+bool GrabViewSnapshot(gfx::NativeView view,
+                      std::vector<unsigned char>* png_representation,
+                      const gfx::Rect& snapshot_bounds) {
+  // TODO(bajones): Implement iOS snapshot functionality
+  return false;
+}
+
+bool GrabWindowSnapshot(gfx::NativeWindow window,
+                        std::vector<unsigned char>* png_representation,
+                        const gfx::Rect& snapshot_bounds) {
+  // TODO(bajones): Implement iOS snapshot functionality
+  return false;
+}
+
+}  // namespace ui