android: Fix snapshot height by including toolbar offset

ui/base/android/window_android.h

Index: ui/base/android/window_android.h
diff --git a/ui/base/android/window_android.h b/ui/base/android/window_android.h
index 0de689c63dcee4ce4a503c9732533bd95531ac92..cd8ae3408c85f2677e2f8472a7357c4e0f9d3012 100644
--- a/ui/base/android/window_android.h
+++ b/ui/base/android/window_android.h
@@ -36,6 +36,10 @@ class UI_BASE_EXPORT WindowAndroid {
     content_offset_ = content_offset;
   }
 
+  gfx::Vector2dF content_offset() const {
+    return content_offset_;
+  }
+
   // Compositor callback relay.
   void OnCompositingDidCommit();