Teach CRFO:CapturePageText to recognize page refreshes with long delays.

chrome/renderer/chrome_render_frame_observer.cc

Index: chrome/renderer/chrome_render_frame_observer.cc
diff --git a/chrome/renderer/chrome_render_frame_observer.cc b/chrome/renderer/chrome_render_frame_observer.cc
index b49f1beea218117dbbd65ff3815aed22b42ed47e..9ce97ebda83a27a8c7495710c4b18f6ceeb2f612 100644
--- a/chrome/renderer/chrome_render_frame_observer.cc
+++ b/chrome/renderer/chrome_render_frame_observer.cc
@@ -64,6 +64,10 @@ static const size_t kMaxIndexChars = 65535;
 // Constants for UMA statistic collection.
 static const char kTranslateCaptureText[] = "Translate.CaptureText";
 
+// For a page that auto-refreshes, we still show the bubble, if
+// the refresh delay is less than this value (in seconds).
+static const double kLocationChangeIntervalInSeconds = 10;
+
 namespace {
 
 // If the source image is null or occupies less area than
@@ -338,7 +342,7 @@ void ChromeRenderFrameObserver::CapturePageText(TextCaptureType capture_type) {
     return;
 
   // Don't capture pages that have pending redirect or location change.
-  if (frame->isNavigationScheduled())
+  if (frame->isNavigationScheduledWithin(kLocationChangeIntervalInSeconds))
     return;
 
   // Don't index/capture pages that are in view source mode.