Add delete context menu for custom wallpapers and some ui tweaks

chrome/browser/chromeos/extensions/wallpaper_private_api.h

Index: chrome/browser/chromeos/extensions/wallpaper_private_api.h
diff --git a/chrome/browser/chromeos/extensions/wallpaper_private_api.h b/chrome/browser/chromeos/extensions/wallpaper_private_api.h
index df7afe7a3c4b8898ff71b3f88456fe67dc4bebe2..b9334858953d91218bb743ab5411d9b42d5196dc 100644
--- a/chrome/browser/chromeos/extensions/wallpaper_private_api.h
+++ b/chrome/browser/chromeos/extensions/wallpaper_private_api.h
@@ -134,6 +134,21 @@ class WallpaperPrivateSetWallpaperFunction : public WallpaperFunctionBase {
   base::SequencedWorkerPool::SequenceToken sequence_token_;
 };
 
+class WallpaperPrivateResetWallpaperFunction
+    : public AsyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("wallpaperPrivate.resetWallpaper",
+                             WALLPAPERPRIVATE_RESETWALLPAPER)
+
+  WallpaperPrivateResetWallpaperFunction();
+
+ protected:
+  virtual ~WallpaperPrivateResetWallpaperFunction();
+
+  // AsyncExtensionFunction overrides.
+  virtual bool RunImpl() OVERRIDE;

[flackr, 2013/03/21 21:51:19]

I think all of these classes should have DISALLOW_COPY_AND_ASSIGN(ClassName).

[bshe, 2013/03/22 15:11:57]

It looks like all these functions are ExtensionFunction. And extension function
have already disallowed copy and assign. 
https://code.google.com/p/chromium/codesearch/#chromium/src/chrome/browser/ex...

So it may not necessary to do it here again?

On 2013/03/21 21:51:19, flackr wrote:

+};
+
 class WallpaperPrivateSetCustomWallpaperFunction
     : public WallpaperFunctionBase {
  public: