[DevTools] Handle emulation in embedder, call into web API.

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 "base/basictypes.h"
 #include "base/compiler_specific.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_protocol_handler.h"
 #include "content/public/browser/readback_types.h"
+#include "third_party/WebKit/public/web/WebDeviceEmulationParams.h"
 
 class SkBitmap;
 
 namespace content {
 
 class RenderViewHostImpl;
 
 namespace devtools {
 namespace page {
 
@@ skipping 34 matching lines @@
                                   double* longitude,
                                   double* accuracy);
 
   Response ClearGeolocationOverride();
 
   Response SetTouchEmulationEnabled(bool enabled,
                                     const std::string* configuration);
 
   Response CaptureScreenshot(DevToolsCommandId command_id);
 
+  Response CanEmulate(bool* result);
+  Response SetDeviceMetricsOverride(int width,
+                                    int height,
+                                    double device_scale_factor,
+                                    bool mobile,
+                                    bool fit_window,
+                                    const double* optional_scale,
+                                    const double* optional_offset_x,
+                                    const double* optional_offset_y);
+  Response ClearDeviceMetricsOverride();
+
   Response CanScreencast(bool* result);
-  Response CanEmulate(bool* result);
-
   Response StartScreencast(const std::string* format,
                            const int* quality,
                            const int* max_width,
                            const int* max_height);
   Response StopScreencast();
   Response ScreencastFrameAck(int frame_number);
 
   Response StartRecordingFrames(int max_frame_count);
   Response StopRecordingFrames(DevToolsCommandId command_id);
   Response CancelRecordingFrames();
 
   Response HandleJavaScriptDialog(bool accept, const std::string* prompt_text);
 
   Response QueryUsageAndQuota(DevToolsCommandId command_id,
                               const std::string& security_origin);
 
   Response SetColorPickerEnabled(bool enabled);
 
  private:
   void UpdateTouchEventEmulationState();
+  void UpdateDeviceEmulationState();
 
   void NotifyScreencastVisibility(bool visible);
   void InnerSwapCompositorFrame();
   void ScreencastFrameCaptured(const cc::CompositorFrameMetadata& metadata,
                                const SkBitmap& bitmap,
                                ReadbackResponse response);
   void ScreencastFrameEncoded(const cc::CompositorFrameMetadata& metadata,
                               const base::Time& timestamp,
                               const std::string& data);
 
   void ScreenshotCaptured(
       DevToolsCommandId command_id,
       const unsigned char* png_data,
       size_t png_size);
 
   void OnColorPicked(int r, int g, int b, int a);
   void OnFramesRecorded(
       DevToolsCommandId command_id,
       scoped_refptr<StopRecordingFramesResponse> response_data);
 
   bool enabled_;
+
   bool touch_emulation_enabled_;
   std::string touch_emulation_configuration_;
 
+  bool device_emulation_enabled_;
+  blink::WebDeviceEmulationParams device_emulation_params_;
+
   bool screencast_enabled_;
   std::string screencast_format_;
   int screencast_quality_;
   int screencast_max_width_;
   int screencast_max_height_;
   int capture_retry_count_;
   bool has_compositor_frame_metadata_;
   cc::CompositorFrameMetadata next_compositor_frame_metadata_;
   cc::CompositorFrameMetadata last_compositor_frame_metadata_;
   int screencast_frame_sent_;
   int screencast_frame_acked_;
   bool processing_screencast_frame_;
 
   scoped_ptr<ColorPicker> color_picker_;
   scoped_ptr<FrameRecorder> frame_recorder_;
 
   RenderViewHostImpl* host_;
   scoped_ptr<Client> client_;
   base::WeakPtrFactory<PageHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PageHandler);
 };
 
 }  // namespace page
 }  // namespace devtools
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_