[devtools] Support different encodings for Page.CaptureScreenshot.

content/browser/devtools/protocol/page_handler.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 CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "content/browser/devtools/protocol/devtools_domain_handler.h"
 #include "content/browser/devtools/protocol/page.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/readback_types.h"
 
 class SkBitmap;
 
+namespace gfx {
+class Image;
+}  // namespace gfx
+
 namespace content {
 
 class DevToolsSession;
 class NavigationHandle;
 class PageNavigationThrottle;
 class RenderFrameHostImpl;
 class WebContentsImpl;
 
 namespace protocol {
 
@@ skipping 25 matching lines @@
   Response Navigate(const std::string& url, Page::FrameId* frame_id) override;
   Response StopLoading() override;
 
   using NavigationEntries = protocol::Array<Page::NavigationEntry>;
   Response GetNavigationHistory(
       int* current_index,
       std::unique_ptr<NavigationEntries>* entries) override;
   Response NavigateToHistoryEntry(int entry_id) override;
 
   void CaptureScreenshot(
+      Maybe<std::string> format,
+      Maybe<int> quality,
       std::unique_ptr<CaptureScreenshotCallback> callback) override;
   Response StartScreencast(Maybe<std::string> format,
                            Maybe<int> quality,
                            Maybe<int> max_width,
                            Maybe<int> max_height,
                            Maybe<int> every_nth_frame) override;
   Response StopScreencast() override;
   Response ScreencastFrameAck(int session_id) override;
 
   Response HandleJavaScriptDialog(bool accept,
                                   Maybe<std::string> prompt_text) override;
 
   Response SetColorPickerEnabled(bool enabled) override;
   Response RequestAppBanner() override;
 
   Response SetControlNavigations(bool enabled) override;
   Response ProcessNavigation(const std::string& response,
                              int navigation_id) override;
 
   std::unique_ptr<PageNavigationThrottle> CreateThrottleForNavigation(
       NavigationHandle* navigation_handle);
 
   void OnPageNavigationThrottleDisposed(int navigation_id);
   void NavigationRequested(const PageNavigationThrottle* throttle);
 
  private:
+  enum EncodingFormat { PNG, JPEG };
+
   WebContentsImpl* GetWebContents();
   void NotifyScreencastVisibility(bool visible);
   void InnerSwapCompositorFrame();
   void ScreencastFrameCaptured(cc::CompositorFrameMetadata metadata,
                                const SkBitmap& bitmap,
                                ReadbackResponse response);
   void ScreencastFrameEncoded(cc::CompositorFrameMetadata metadata,
                               const base::Time& timestamp,
                               const std::string& data);
 
-  void ScreenshotCaptured(
-      std::unique_ptr<CaptureScreenshotCallback> callback,
-      const unsigned char* png_data,
-      size_t png_size);
+  void ScreenshotCaptured(std::unique_ptr<CaptureScreenshotCallback> callback,
+                          const std::string& format,
+                          int quality,
+                          const gfx::Image& image);
+  void ScreenshotEncoded(std::unique_ptr<CaptureScreenshotCallback> callback,
+                         const std::string& data);
 
   void OnColorPicked(int r, int g, int b, int a);
 
   // NotificationObserver overrides.
   void Observe(int type,
                const NotificationSource& source,
                const NotificationDetails& details) override;
 
   bool enabled_;
 
@@ skipping 22 matching lines @@
   NotificationRegistrar registrar_;
   base::WeakPtrFactory<PageHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PageHandler);
 };
 
 }  // namespace protocol
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_