android: Fix snapshot height by including toolbar offset

ui/snapshot/snapshot_android.cc

Index: ui/snapshot/snapshot_android.cc
diff --git a/ui/snapshot/snapshot_android.cc b/ui/snapshot/snapshot_android.cc
index 9713cff3ec1da7e6303149ed777bf186834e0b3e..aec755516c87e029bd495bc165412b0636f17435 100644
--- a/ui/snapshot/snapshot_android.cc
+++ b/ui/snapshot/snapshot_android.cc
@@ -11,6 +11,7 @@
 #include "ui/base/android/window_android.h"
 #include "ui/base/android/window_android_compositor.h"
 #include "ui/gfx/display.h"
+#include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/screen.h"
 #include "ui/snapshot/snapshot_async.h"
@@ -44,7 +45,14 @@ static void MakeAsyncCopyRequest(
   gfx::Rect source_rect_in_pixel =
       gfx::ToEnclosingRect(gfx::ScaleRect(source_rect, device_scale_factor));
 
-  request->set_area(source_rect_in_pixel);
+  // Account for the toolbar offset.
+  gfx::Vector2dF offset = window->content_offset();
+  gfx::Rect adjusted_source_rect(gfx::ToRoundedPoint(
+      gfx::PointF(source_rect_in_pixel.x() + offset.x(),
+                  source_rect_in_pixel.y() + offset.y())),
+      source_rect_in_pixel.size());
+
+  request->set_area(adjusted_source_rect);
   window->GetCompositor()->RequestCopyOfOutputOnRootLayer(request.Pass());
 }