Add test_runner API to set the value of an accessibility object.

components/test_runner/web_ax_object_proxy.cc

 // Copyright 2014 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 "components/test_runner/web_ax_object_proxy.h"
 
 #include "base/strings/stringprintf.h"
 #include "gin/handle.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
@@ skipping 546 matching lines @@
                  &WebAXObjectProxy::IsPressActionSupported)
       .SetMethod("isIncrementActionSupported",
                  &WebAXObjectProxy::IsIncrementActionSupported)
       .SetMethod("isDecrementActionSupported",
                  &WebAXObjectProxy::IsDecrementActionSupported)
       .SetMethod("parentElement", &WebAXObjectProxy::ParentElement)
       .SetMethod("increment", &WebAXObjectProxy::Increment)
       .SetMethod("decrement", &WebAXObjectProxy::Decrement)
       .SetMethod("showMenu", &WebAXObjectProxy::ShowMenu)
       .SetMethod("press", &WebAXObjectProxy::Press)
+      .SetMethod("setValue", &WebAXObjectProxy::SetValue)
       .SetMethod("isEqual", &WebAXObjectProxy::IsEqual)
       .SetMethod("setNotificationListener",
                  &WebAXObjectProxy::SetNotificationListener)
       .SetMethod("unsetNotificationListener",
                  &WebAXObjectProxy::UnsetNotificationListener)
       .SetMethod("takeFocus", &WebAXObjectProxy::TakeFocus)
       .SetMethod("scrollToMakeVisible", &WebAXObjectProxy::ScrollToMakeVisible)
       .SetMethod("scrollToMakeVisibleWithSubFocus",
                  &WebAXObjectProxy::ScrollToMakeVisibleWithSubFocus)
       .SetMethod("scrollToGlobalPoint", &WebAXObjectProxy::ScrollToGlobalPoint)
@@ skipping 570 matching lines @@
 
 void WebAXObjectProxy::ShowMenu() {
   accessibility_object_.showContextMenu();
 }
 
 void WebAXObjectProxy::Press() {
   accessibility_object_.updateLayoutAndCheckValidity();
   accessibility_object_.press();
 }
 
+bool WebAXObjectProxy::SetValue(const std::string& value) {
+  accessibility_object_.updateLayoutAndCheckValidity();
+  if (!accessibility_object_.canSetValueAttribute())
+    return false;
+
+  accessibility_object_.setValue(blink::WebString::fromUTF8(value));
+  return true;
+}
+
 bool WebAXObjectProxy::IsEqual(v8::Local<v8::Object> proxy) {
   WebAXObjectProxy* unwrapped_proxy = NULL;
   if (!gin::ConvertFromV8(blink::mainThreadIsolate(), proxy, &unwrapped_proxy))
     return false;
   return unwrapped_proxy->IsEqualToObject(accessibility_object_);
 }
 
 void WebAXObjectProxy::SetNotificationListener(
     v8::Local<v8::Function> callback) {
   v8::Isolate* isolate = blink::mainThreadIsolate();
@@ skipping 170 matching lines @@
   v8::Local<v8::Value> value_handle = gin::CreateHandle(
       isolate, new WebAXObjectProxy(object, this)).ToV8();
   if (value_handle.IsEmpty())
     return v8::Local<v8::Object>();
   v8::Local<v8::Object> handle = value_handle->ToObject(isolate);
   elements_.Append(handle);
   return handle;
 }
 
 }  // namespace test_runner