devtools: Adds Page.getLayoutMetrics.

third_party/WebKit/LayoutTests/inspector-protocol/page/get-layout-metrics-expected.txt

Index: third_party/WebKit/LayoutTests/inspector-protocol/page/get-layout-metrics-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/page/get-layout-metrics-expected.txt b/third_party/WebKit/LayoutTests/inspector-protocol/page/get-layout-metrics-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c8e2053f6325d179e6a9d290ccf287d11bb4a894
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/page/get-layout-metrics-expected.txt
@@ -0,0 +1,18 @@
+Tests that Page.getLayoutMetrics returns reasonable values.
+
+LayoutViewport: {
+    clientHeight : 600
+    clientWidth : 785

[dgozman, 2016/10/25 18:14:55]

Could this flake on different platforms due to different scrollbar size?

[Eric Seckler, 2016/10/26 12:30:45]

Not really, all platforms have the same size mock scrollbars. It would need
different expectations if it was run on android (b/c of different window size),
but android only runs smoke layout tests AFAIK.

+    pageX : 0
+    pageY : 200
+}
+VisualViewport: {
+    clientHeight : 600
+    clientWidth : 785
+    offsetX : 0
+    offsetY : 0
+    pageX : 0
+    pageY : 200
+    scale : 1
+}
+