Move compositor InputHandler from RenderViewImpl to RenderWidget.

chrome/browser/site_per_process_interactive_browsertest.cc

 // Copyright 2016 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 "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/exclusive_access/fullscreen_controller_test.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 131 matching lines @@
 
   GURL frame_url(
       embedded_test_server()->GetURL("b.com", "/page_with_input_field.html"));
   EXPECT_TRUE(NavigateIframeToURL(web_contents, "child0", frame_url));
 
   // Focus the subframe and then its input field.  The return value
   // "input-focus" will be sent once the input field's focus event fires.
   content::RenderFrameHost* child =
       ChildFrameAt(web_contents->GetMainFrame(), 0);
   std::string result;
+  std::string script =
+      "function onInput(e) {"
+      "  domAutomationController.setAutomationId(0);"
+      "  domAutomationController.send(getInputFieldText());"
+      "}"
+      "inputField = document.getElementById('text-field');"
+      "inputField.addEventListener('input', onInput, false);";
+  EXPECT_TRUE(ExecuteScript(child, script));
   EXPECT_TRUE(ExecuteScriptAndExtractString(
       child, "window.focus(); focusInputField();", &result));
   EXPECT_EQ("input-focus", result);
 
   // The subframe should now be focused.
   EXPECT_EQ(child, web_contents->GetFocusedFrame());
 
   // Generate a few keyboard events and route them to currently focused frame.
+  // We wait for replies to be sent back from the page, since keystrokes may
+  // take time to propagate to the renderer's main thread.
+  content::DOMMessageQueue msg_queue;
+  std::string reply;
   SimulateKeyPress(web_contents, ui::DomKey::FromCharacter('f'),
                    ui::DomCode::US_F, ui::VKEY_F, false, false, false, false);
+  EXPECT_TRUE(msg_queue.WaitForMessage(&reply));
+  EXPECT_EQ("\"F\"", reply);
+
   SimulateKeyPress(web_contents, ui::DomKey::FromCharacter('O'),
                    ui::DomCode::US_O, ui::VKEY_O, false, false, false, false);
+  EXPECT_TRUE(msg_queue.WaitForMessage(&reply));
+  EXPECT_EQ("\"FO\"", reply);
+
   SimulateKeyPress(web_contents, ui::DomKey::FromCharacter('O'),
                    ui::DomCode::US_O, ui::VKEY_O, false, false, false, false);
-
-  // Verify that the input field in the subframe received the keystrokes.
-  EXPECT_TRUE(ExecuteScriptAndExtractString(
-      child,
-      "window.domAutomationController.send(getInputFieldText());", &result));
-  EXPECT_EQ("FOO", result);
+  EXPECT_TRUE(msg_queue.WaitForMessage(&reply));
+  EXPECT_EQ("\"FOO\"", reply);
 }
 
 // Ensure that sequential focus navigation (advancing focused elements with
 // <tab> and <shift-tab>) works across cross-process subframes.
 // The test sets up six inputs fields in a page with two cross-process
 // subframes:
 //                 child1            child2
 //             /------------\    /------------\.
 //             | 2. <input> |    | 4. <input> |
 //  1. <input> | 3. <input> |    | 5. <input> |  6. <input>
@@ skipping 582 matching lines @@
                                           "document.pointerLockElement)",
                                           &mouse_locked));
   EXPECT_TRUE(mouse_locked);
   EXPECT_TRUE(main_frame->GetView()->IsMouseLocked());
 
   EXPECT_TRUE(ExecuteScript(main_frame,
                             "document.querySelector('iframe').parentNode."
                             "removeChild(document.querySelector('iframe'))"));
   EXPECT_FALSE(main_frame->GetView()->IsMouseLocked());
 }