[devtools] Support different encodings for Page.CaptureScreenshot.

content/browser/renderer_host/render_widget_host_impl.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 35 matching lines @@
 #include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/events/gesture_detection/gesture_provider_config_helper.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/native_widget_types.h"
 
 struct FrameHostMsg_HittestData_Params;
 struct ViewHostMsg_SelectionBounds_Params;
 struct ViewHostMsg_UpdateRect_Params;
 
-namespace base {
-class RefCountedBytes;
-}
-
 namespace blink {
 class WebInputEvent;
 class WebMouseEvent;
 struct WebCompositionUnderline;
 }
 
 #if defined(OS_MACOSX)
 namespace device {
 class PowerSaveBlocker;
 }  // namespace device
 #endif
 
 namespace gfx {
+class Image;
 class Range;
 }
 
 namespace content {
 
 class BrowserAccessibilityManager;
 class InputRouter;
 class MockRenderWidgetHost;
 class RenderWidgetHostOwnerDelegate;
 class SyntheticGestureController;
@@ skipping 118 matching lines @@
   void DragSourceEndedAt(const gfx::Point& client_pt,
                          const gfx::Point& screen_pt,
                          blink::WebDragOperation operation) override;
   void DragSourceSystemDragEnded() override;
   void FilterDropData(DropData* drop_data) override;
 
   // Notification that the screen info has changed.
   void NotifyScreenInfoChanged();
 
   // Forces redraw in the renderer and when the update reaches the browser
-  // grabs snapshot from the compositor. Returns PNG-encoded snapshot.
+  // grabs snapshot from the compositor. On MacOS, the snapshot is taken from
+  // the Cocoa view for end-to-end testing purposes. Returns a gfx::Image that
+  // is backed by an NSImage on MacOS or by an SkBitmap otherwise. The
+  // gfx::Image may be empty if the snapshot failed.
   using GetSnapshotFromBrowserCallback =
-      base::Callback<void(const unsigned char*, size_t)>;
+      base::Callback<void(const gfx::Image&)>;
   void GetSnapshotFromBrowser(const GetSnapshotFromBrowserCallback& callback);
 
   const NativeWebKeyboardEvent* GetLastKeyboardEvent() const;
 
   // Sets the View of this RenderWidgetHost.
   void SetView(RenderWidgetHostViewBase* view);
 
   RenderWidgetHostDelegate* delegate() const { return delegate_; }
 
   bool empty() const { return current_size_.IsEmpty(); }
@@ skipping 470 matching lines @@
   void OnUnexpectedEventAck(UnexpectedEventAckType type) override;
 
   void OnSyntheticGestureCompleted(SyntheticGesture::Result result);
 
   // Called when there is a new auto resize (using a post to avoid a stack
   // which may get in recursive loops).
   void DelayedAutoResized();
 
   void WindowSnapshotReachedScreen(int snapshot_id);
 
-  void OnSnapshotDataReceived(int snapshot_id,
-                              const unsigned char* png,
-                              size_t size);
-
-  void OnSnapshotDataReceivedAsync(
-      int snapshot_id,
-      scoped_refptr<base::RefCountedBytes> png_data);
+  void OnSnapshotReceived(int snapshot_id, const gfx::Image& image);
 
   // 1. Grants permissions to URL (if any)
   // 2. Grants permissions to filenames
   // 3. Grants permissions to file system files.
   // 4. Register the files with the IsolatedContext.
   void GrantFileAccessFromDropData(DropData* drop_data);
 
   // true if a renderer has once been valid. We use this flag to display a sad
   // tab only when we lose our renderer and not if a paint occurs during
   // initialization.
@@ skipping 187 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_