Implement input type=color UI

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
index abd656aa6a681654cff954fdb57cf6fb5aa1551e..80e492911c78bdedc702d3b04add4f82173088b2 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -15,6 +15,7 @@
 #include "content/public/browser/save_page_type.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/common/view_type.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
@@ -356,6 +357,13 @@ class WebContents : public PageNavigator {
   // locked.
   virtual bool GotResponseToLockMouseRequest(bool allowed) = 0;
 
+  // Called when the user has selected a color in the color chooser.
+  virtual void DidChooseColorInColorChooser(int color_chooser_id,
+                                            const SkColor&) = 0;
+
+  // Called when the color chooser has ended.
+  virtual void DidEndColorChooser(int color_chooser_id) = 0;
+
   // Returns true if the location bar should be focused by default rather than
   // the page contents. The view calls this function when the tab is focused
   // to see what it should do.