<webview>: Fix missing transparency in captureVisibleRegion().

extensions/browser/api/guest_view/web_view/web_view_internal_api.h

 // Copyright 2014 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.
 
 #ifndef EXTENSIONS_BROWSER_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_
 #define EXTENSIONS_BROWSER_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 25 matching lines @@
  private:
   virtual bool RunAsyncSafe(WebViewGuest* guest) = 0;
 };
 
 class WebViewInternalCaptureVisibleRegionFunction
     : public WebViewInternalExtensionFunction,
       public WebContentsCaptureClient {
  public:
   DECLARE_EXTENSION_FUNCTION("webViewInternal.captureVisibleRegion",
                              WEBVIEWINTERNAL_CAPTUREVISIBLEREGION);
   WebViewInternalCaptureVisibleRegionFunction() {}

[Finnur, 2016/04/07 10:08:33]

is_guest_transparent_(false) ... or something.

[avallee, 2016/04/07 14:21:16]

Done.

 
  protected:
   ~WebViewInternalCaptureVisibleRegionFunction() override {}
 
  private:
   // WebViewInternalExtensionFunction implementation.
   bool RunAsyncSafe(WebViewGuest* guest) override;
 
   // extensions::WebContentsCaptureClient:
   bool IsScreenshotEnabled() override;
+  bool ClientAllowsTransparency() override;
   void OnCaptureSuccess(const SkBitmap& bitmap) override;
   void OnCaptureFailure(FailureReason reason) override;
 
+  bool is_guest_transparent_;
+
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalCaptureVisibleRegionFunction);
 };
 
 class WebViewInternalNavigateFunction
     : public WebViewInternalExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("webViewInternal.navigate",
                              WEBVIEWINTERNAL_NAVIGATE);
   WebViewInternalNavigateFunction() {}
 
@@ skipping 409 matching lines @@
   uint32_t remove_mask_;
   // Tracks any data related or parse errors.
   bool bad_message_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewInternalClearDataFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEB_VIEW_WEB_VIEW_INTERNAL_API_H_