Moving capture_web_contents_function to extensions.

extensions/browser/api/capture_web_contents_function.h

Index: extensions/browser/api/capture_web_contents_function.h
diff --git a/chrome/browser/extensions/api/capture_web_contents_function.h b/extensions/browser/api/capture_web_contents_function.h
similarity index 87%
rename from chrome/browser/extensions/api/capture_web_contents_function.h
rename to extensions/browser/api/capture_web_contents_function.h
index 0f3b9dbaf67139a668df60db86fad262dae220d2..b77c3d69772e480053e78b3ff2a7c33803852277 100644
--- a/chrome/browser/extensions/api/capture_web_contents_function.h
+++ b/extensions/browser/api/capture_web_contents_function.h
@@ -5,7 +5,6 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_API_CAPTURE_WEB_CONTENTS_FUNCTION_H_
 #define CHROME_BROWSER_EXTENSIONS_API_CAPTURE_WEB_CONTENTS_FUNCTION_H_
 
-#include "chrome/browser/extensions/chrome_extension_function.h"
 #include "extensions/common/api/extension_types.h"
 
 class SkBitmap;
@@ -18,12 +17,13 @@ namespace extensions {
 
 // Base class for capturing visibile area of a WebContents.
 // This is used by both webview.captureVisibleRegion and tabs.captureVisibleTab.
-class CaptureWebContentsFunction : public ChromeAsyncExtensionFunction {
+template <typename T>
+class CaptureWebContentsFunction : public T {
  public:
-  CaptureWebContentsFunction();
+  CaptureWebContentsFunction() {}
 
  protected:
-  virtual ~CaptureWebContentsFunction();
+  virtual ~CaptureWebContentsFunction() {}
 
   // ExtensionFunction implementation.
   virtual bool HasPermission() OVERRIDE;
@@ -39,6 +39,9 @@ class CaptureWebContentsFunction : public ChromeAsyncExtensionFunction {
   };
   virtual void OnCaptureFailure(FailureReason reason) = 0;
 
+  // ValidationFailure override to match RunAsync().
+  static bool ValidationFailure(CaptureWebContentsFunction* function);
+
  private:
   typedef core_api::extension_types::ImageDetails ImageDetails;