[DevTools] Full-size screenshots in device mode.

third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
index 6919dc60f653438c46489a00bc4165c7a1e3f78e..c7f0dc3449f15820967ce5d0d48bc0f78a2dc8d0 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
@@ -846,7 +846,8 @@ Response InspectorPageAgent::configureOverlay(Maybe<bool> suspended,
 
 Response InspectorPageAgent::getLayoutMetrics(
     std::unique_ptr<protocol::Page::LayoutViewport>* outLayoutViewport,
-    std::unique_ptr<protocol::Page::VisualViewport>* outVisualViewport) {
+    std::unique_ptr<protocol::Page::VisualViewport>* outVisualViewport,
+    std::unique_ptr<protocol::DOM::Rect>* outContentSize) {
   LocalFrame* mainFrame = m_inspectedFrames->root();
   VisualViewport& visualViewport = mainFrame->host()->visualViewport();
 
@@ -868,6 +869,14 @@ Response InspectorPageAgent::getLayoutMetrics(
   float scrollbarWidth = frameView->verticalScrollbarWidth() / scale;
   float scrollbarHeight = frameView->horizontalScrollbarHeight() / scale;
 
+  IntSize contentSize = frameView->getScrollableArea()->contentsSize();
+  *outContentSize = protocol::DOM::Rect::create()

[Eric Seckler, 2017/03/13 10:41:28]

FWIW, do we actually need this? Could we not get the same value by querying
document.scrollingElement.scrollWidth/Height via js?

[dgozman, 2017/03/13 15:04:04]

We could! But since we already have getLayoutMetrics, I feel like exposing this
information does not hurt.

+                        .setX(0)
+                        .setY(0)
+                        .setWidth(contentSize.width())
+                        .setHeight(contentSize.height())
+                        .build();
+
   *outVisualViewport =
       protocol::Page::VisualViewport::create()
           .setOffsetX(adjustScrollForAbsoluteZoom(visibleRect.x(), pageZoom))