Don't leave renderer process frozen when canceling JavaScript dialogs.

chrome/browser/ui/browser_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
@@ skipping 213 matching lines @@
  public:
   TestInterstitialPage(WebContents* tab, bool new_navigation, const GURL& url) {
     interstitial_page_ = InterstitialPage::Create(
         tab, new_navigation, url , this);
     interstitial_page_->Show();
   }
   virtual ~TestInterstitialPage() { }
   void Proceed() {
     interstitial_page_->Proceed();
   }
+  void DontProceed() {
+    interstitial_page_->DontProceed();
+  }
 
   virtual std::string GetHTMLContents() OVERRIDE {
     return "<h1>INTERSTITIAL</h1>";
   }
 
  private:
   InterstitialPage* interstitial_page_;  // Owns us.
 };
 
 class RenderViewSizeObserver : public content::WebContentsObserver {
@@ skipping 1476 matching lines @@
   EXPECT_TRUE(contents->ShowingInterstitialPage());
   EXPECT_FALSE(dialog_queue->HasActiveDialog());
 
   {
     scoped_refptr<content::MessageLoopRunner> loop_runner(
         new content::MessageLoopRunner);
 
     InterstitialObserver observer(contents,
                                   base::Closure(),
                                   loop_runner->QuitClosure());
-    interstitial->Proceed();
+    interstitial->DontProceed();
     loop_runner->Run();
     // interstitial is deleted now.
   }
+
+  // Make sure input events still work in the renderer process.
+  EXPECT_FALSE(contents->GetRenderProcessHost()->IgnoreInputEvents());
 }
 
 
 IN_PROC_BROWSER_TEST_F(BrowserTest, InterstitialCloseTab) {
   WebContents* contents = browser()->tab_strip_model()->GetActiveWebContents();
 
   {
     scoped_refptr<content::MessageLoopRunner> loop_runner(
         new content::MessageLoopRunner);
 
@@ skipping 729 matching lines @@
   exp_commit_size.Enlarge(wcv_resize_insets.width(),
                           wcv_resize_insets.height() + height_inset);
   EXPECT_EQ(exp_commit_size, rwhv_commit_size2);
   EXPECT_EQ(exp_commit_size, wcv_commit_size2);
   // Sizes of RenderWidgetHostView and WebContentsView before and after
   // WebContentsDelegate::DidNavigateMainFramePostCommit should be the same.
   EXPECT_EQ(rwhv_commit_size2,
             web_contents->GetRenderWidgetHostView()->GetViewBounds().size());
   EXPECT_EQ(wcv_commit_size2, web_contents->GetView()->GetContainerSize());
 }