Propagate pageScaleFactor to GuestViews

chrome/browser/profiles/host_zoom_map_browsertest.cc

Index: chrome/browser/profiles/host_zoom_map_browsertest.cc
diff --git a/chrome/browser/profiles/host_zoom_map_browsertest.cc b/chrome/browser/profiles/host_zoom_map_browsertest.cc
index 2fdf7811d7ce604115f39d52a1d5db0cfa9ac25b..9bf73bf54891a0c3d930f93b2032dd89c4dcb100 100644
--- a/chrome/browser/profiles/host_zoom_map_browsertest.cc
+++ b/chrome/browser/profiles/host_zoom_map_browsertest.cc
@@ -432,3 +432,24 @@ IN_PROC_BROWSER_TEST_F(HostZoomMapBrowserTest,
       new_default_zoom_level);
   EXPECT_EQ(new_default_zoom_level, child_host_zoom_map->GetDefaultZoomLevel());
 }
+
+IN_PROC_BROWSER_TEST_F(HostZoomMapBrowserTest, PageScaleIsOneChanged) {
+  GURL test_url(url::kAboutBlankURL);
+  std::string test_host(test_url.host());
+
+  ui_test_utils::NavigateToURL(browser(), test_url);
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+
+  ASSERT_TRUE(content::HostZoomMap::PageScaleFactorIsOne(web_contents));
+
+  ZoomLevelChangeObserver observer(browser()->profile());
+
+  web_contents->SetPageScale(1.5);
+  observer.BlockUntilZoomLevelForHostHasChanged(test_host);
+  EXPECT_FALSE(content::HostZoomMap::PageScaleFactorIsOne(web_contents));
+
+  web_contents->SetPageScale(1.f);
+  observer.BlockUntilZoomLevelForHostHasChanged(test_host);
+  EXPECT_TRUE(content::HostZoomMap::PageScaleFactorIsOne(web_contents));
+}