Support color chooser inside extesions, apps, chrome frame, dev tool

chrome/browser/ui/color_chooser.cc

+// Copyright 2013 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 "chrome/browser/ui/color_chooser.h"
+
+#include "content/public/browser/web_contents.h"
+
+ColorChooser* ColorChooser::current_color_chooser_ = NULL;
+
+ColorChooser::ColorChooser(content::WebContents* web_contents)
+    : web_contents_(web_contents) {
+  DCHECK(!current_color_chooser_);
+  current_color_chooser_ = this;
+}
+
+ColorChooser::~ColorChooser() {
+  DCHECK(current_color_chooser_ != this);
+}
+
+void ColorChooser::DidChooseColor(SkColor color) {

[Ben Goodger (Google), 2013/04/17 15:34:15]

... but looking at how little this class does makes me believe that it's not
essential at all and is just extra complexity in the class structure.

Just have the view manage its instance itself, and have the view implement
content::ColorChooser directly and manage its own instance.

+  if (web_contents_)
+    web_contents_->DidChooseColorInColorChooser(color);
+}
+
+void ColorChooser::DidEndColorChooser() {
+  current_color_chooser_ = NULL;
+  if (web_contents_)
+    web_contents_->DidEndColorChooser();
+}