Disable zoom bubble for PDF extension.

chrome/browser/ui/views/location_bar/zoom_bubble_view.cc

Index: chrome/browser/ui/views/location_bar/zoom_bubble_view.cc
diff --git a/chrome/browser/ui/views/location_bar/zoom_bubble_view.cc b/chrome/browser/ui/views/location_bar/zoom_bubble_view.cc
index 9308b6dc24fc9b7f18f8bccc2e623e6401425a37..5f4087187e3616882862bd78f925795e8fb1be34 100644
--- a/chrome/browser/ui/views/location_bar/zoom_bubble_view.cc
+++ b/chrome/browser/ui/views/location_bar/zoom_bubble_view.cc
@@ -7,6 +7,7 @@
 #include "base/i18n/rtl.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ -38,6 +39,18 @@ ZoomBubbleView* ZoomBubbleView::zoom_bubble_ = NULL;
 // static
 void ZoomBubbleView::ShowBubble(content::WebContents* web_contents,
                                 bool auto_close) {
+  // Find the extension that initiated the zoom change, if any.
+  ui_zoom::ZoomController* zoom_controller =
+      ui_zoom::ZoomController::FromWebContents(web_contents);
+  const extensions::ExtensionZoomRequestClient* client =
+      static_cast<const extensions::ExtensionZoomRequestClient*>(
+          zoom_controller->last_client());
+
+  if (auto_close && client &&
+      extensions::util::ZoomWithoutBubble(client->extension())) {
+    return;
+  }
+
   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
   DCHECK(browser && browser->window() &&
          browser->exclusive_access_manager()->fullscreen_controller());
@@ -49,11 +62,6 @@ void ZoomBubbleView::ShowBubble(content::WebContents* web_contents,
   views::View* anchor_view = anchor_to_view ?
       browser_view->GetLocationBarView()->zoom_view() : NULL;
 
-  // Find the extension that initiated the zoom change, if any.
-  ui_zoom::ZoomController* zoom_controller =
-      ui_zoom::ZoomController::FromWebContents(web_contents);
-  const ui_zoom::ZoomRequestClient* client = zoom_controller->last_client();
-
   // If the bubble is already showing in this window and the zoom change was not
   // initiated by an extension, then the bubble can be reused and only the label
   // text needs to be updated.
@@ -72,11 +80,8 @@ void ZoomBubbleView::ShowBubble(content::WebContents* web_contents,
 
   // If the zoom change was initiated by an extension, capture the relevent
   // information from it.
-  if (client) {
-    zoom_bubble_->SetExtensionInfo(
-        static_cast<const extensions::ExtensionZoomRequestClient*>(client)
-            ->extension());
-  }
+  if (client)
+    zoom_bubble_->SetExtensionInfo(client->extension());
 
   // If we do not have an anchor view, parent the bubble to the content area.
   if (!anchor_to_view)