bump protocol

Author: devtools-bot

_data/tot/protocol.json

@@ -474,6 +474,39 @@
                             "description": "Scale relative to the ideal viewport (size at width=device-width)."
                         }
                     ]
+                },
+                {
+                    "id": "Viewport",
+                    "type": "object",
+                    "description": "Viewport for capturing screenshot.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "x",
+                            "type": "number",
+                            "description": "X offset in CSS pixels."
+                        },
+                        {
+                            "name": "y",
+                            "type": "number",
+                            "description": "Y offset in CSS pixels"
+                        },
+                        {
+                            "name": "width",
+                            "type": "number",
+                            "description": "Rectangle width in CSS pixels"
+                        },
+                        {
+                            "name": "height",
+                            "type": "number",
+                            "description": "Rectangle height in CSS pixels"
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "description": "Page scale factor."
+                        }
+                    ]
                 }
             ],
             "commands": [
@@ -971,6 +1004,13 @@
                             "optional": true,
                             "description": "Compression quality from range [0..100] (jpeg only)."
                         },
+                        {
+                            "name": "clip",
+                            "$ref": "Viewport",
+                            "optional": true,
+                            "description": "Capture the screenshot of a given region only.",
+                            "experimental": true
+                        },
                         {
                             "name": "fromSurface",
                             "type": "boolean",

_versions/tot.html

@@ -8,7 +8,7 @@ <h2 class="heading">latest (tip-of-tree)</h2>
 
 <h5 browser>Latest <a
    href="https://chromium.googlesource.com/chromium/src/+log/master/third_party/WebKit/Source/core/inspector/browser_protocol.json">browser_protocol.json</a> version updated:</h5>
-<code browser>Date:   Tue Jul 11 12:15:29 2017 -0700
+<code browser>Date:   Wed Jul 12 07:15:22 2017 -0700
 </code>
 
 <h5 js>Latest <a