Generate thumbnails in the browser process.

chrome/browser/tab_contents/tab_contents.cc

Index: chrome/browser/tab_contents/tab_contents.cc
diff --git a/chrome/browser/tab_contents/tab_contents.cc b/chrome/browser/tab_contents/tab_contents.cc
index bfd1a409a7a6624dcfb42133386a6988f6321aae..de2801c42d62de7c21a379bb5ea7f543f0cbb4c2 100644
--- a/chrome/browser/tab_contents/tab_contents.cc
+++ b/chrome/browser/tab_contents/tab_contents.cc
@@ -75,6 +75,7 @@
 #include "chrome/browser/tab_contents/tab_contents_delegate.h"
 #include "chrome/browser/tab_contents/tab_contents_ssl_helper.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
+#include "chrome/browser/tab_contents/thumbnail_generator.h"
 #include "chrome/browser/tab_contents/web_navigation_observer.h"
 #include "chrome/browser/translate/page_translated_details.h"
 #include "chrome/browser/ui/app_modal_dialogs/message_box_handler.h"
@@ -2378,6 +2379,12 @@ void TabContents::OnPageContents(const GURL& url,
       NotificationType::TAB_LANGUAGE_DETERMINED,
       Source<TabContents>(this),
       Details<std::string>(&lang));
+
+  // Generate the thumbnail here if the in-browser thumbnailing is enabled.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableInBrowserThumbnailing)) {
+    ThumbnailGenerator::UpdateThumbnailIfNecessary(this, url);
+  }
 }
 
 void TabContents::OnPageTranslated(int32 page_id,