Fix page zoom to be frame-centric for out-of-process frames.

content/public/test/browser_test_utils.h

Index: content/public/test/browser_test_utils.h
diff --git a/content/public/test/browser_test_utils.h b/content/public/test/browser_test_utils.h
index 494d30e4ceb23d3aab51e2d9c710ea90ac6f9d11..4e3bec5ba0a4c2660c2475fee2159fbd722c7707 100644
--- a/content/public/test/browser_test_utils.h
+++ b/content/public/test/browser_test_utils.h
@@ -206,6 +206,9 @@ bool ExecuteScript(const ToRenderFrameHost& adapter,
 // sets |result| to the value passed to "window.domAutomationController.send" by
 // the executed script. They return true on success, false if the script
 // execution failed or did not evaluate to the expected type.
+bool ExecuteScriptAndExtractDouble(const ToRenderFrameHost& adapter,
+                                   const std::string& script,
+                                   double* result) WARN_UNUSED_RESULT;
 bool ExecuteScriptAndExtractInt(const ToRenderFrameHost& adapter,
                                 const std::string& script,
                                 int* result) WARN_UNUSED_RESULT;