DevTools: pass offset top and bottom for screencast viewport.

content/browser/devtools/devtools_protocol_constants.h

 // Copyright (c) 2013 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_DEVTOOLS_PROTOCOL_CONSTANTSH_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_CONSTANTSH_
 
 // The constants in this file should be used instead manually constructing
 // strings passed to and from DevTools protocol.
 //
@@ skipping 52 matching lines @@
     extern const char kName[];
   }  // targetCrashed
 
 }  // Inspector
 
 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 {
     extern const char kName[];
   }  // disable
 
   namespace handleJavaScriptDialog {
     extern const char kName[];
     extern const char kParamAccept[];
     extern const char kParamPromptText[];
@@ skipping 64 matching lines @@
 
 namespace getInfo {
   extern const char kName[];
 }  // getInfo
 }  // SystemInfo
 
 }  // devtools
 }  // content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_CONSTANTSH_