DevTools: pass offset top and bottom for screencast viewport.

Review URL: https://chromiumcodereview.appspot.com/23531017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@220626 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/devtools/devtools_protocol_constants.cc

@@ -61,6 +61,8 @@ namespace Page {
 const char kData[] = "data";
 const char kParamDeviceScaleFactor[] = "deviceScaleFactor";
 const char kParamPageScaleFactor[] = "pageScaleFactor";
+const char kParamOffsetBottom[] = "offsetBottom";
+const char kParamOffsetTop[] = "offsetTop";
 const char kParamViewport[] = "viewport";
 
 namespace disable {

content/browser/devtools/devtools_protocol_constants.h

@@ -70,6 +70,8 @@ namespace Page {
   extern const char kData[];
   extern const char kParamDeviceScaleFactor[];
   extern const char kParamPageScaleFactor[];
+  extern const char kParamOffsetBottom[];
+  extern const char kParamOffsetTop[];
   extern const char kParamViewport[];
 
   namespace disable {

content/browser/devtools/renderer_overrides_handler.cc

@@ -425,6 +425,10 @@ void RendererOverridesHandler::ScreenshotCaptured(
                         metadata.device_scale_factor);
     response->SetDouble(devtools::Page::kParamPageScaleFactor,
                         metadata.page_scale_factor);
+    response->SetDouble(devtools::Page::kParamOffsetTop,
+                        metadata.location_bar_content_translation.y());
+    response->SetDouble(devtools::Page::kParamOffsetBottom,
+                        metadata.overdraw_bottom_height);
 
     base::DictionaryValue* viewport = new base::DictionaryValue();
     viewport->SetDouble(devtools::kParamX, metadata.root_scroll_offset.x());