Extract WebFrameClient implementation out of WebTestProxyBase.

components/test_runner/test_runner.cc

Index: components/test_runner/test_runner.cc
diff --git a/components/test_runner/test_runner.cc b/components/test_runner/test_runner.cc
index a5cf1865625a7625876c0dd814bf72e812a35774..60fa315e8bb048352a952547f747d8d17e468600 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -19,6 +19,7 @@
 #include "components/test_runner/mock_credential_manager_client.h"
 #include "components/test_runner/mock_screen_orientation_client.h"
 #include "components/test_runner/mock_web_speech_recognizer.h"
+#include "components/test_runner/mock_web_user_media_client.h"
 #include "components/test_runner/test_interfaces.h"
 #include "components/test_runner/test_preferences.h"
 #include "components/test_runner/web_content_settings.h"
@@ -1668,6 +1669,7 @@ TestRunner::TestRunner(TestInterfaces* interfaces)
       web_view_(nullptr),
       web_content_settings_(new WebContentSettings()),
       mock_screen_orientation_client_(new MockScreenOrientationClient),
+      chooser_count_(0),
       weak_factory_(this) {}
 
 TestRunner::~TestRunner() {}
@@ -1762,6 +1764,7 @@ void TestRunner::Reset() {
 
   platform_name_ = "chromium";
   tooltip_text_ = std::string();
+  chooser_count_ = 0;
   web_history_item_count_ = 0;
   intercept_post_message_ = false;
 
@@ -2515,6 +2518,12 @@ MockScreenOrientationClient* TestRunner::getMockScreenOrientationClient() {
   return mock_screen_orientation_client_.get();
 }
 
+MockWebUserMediaClient* TestRunner::getMockWebUserMediaClient() {
+  if (!user_media_client_.get())
+    user_media_client_.reset(new MockWebUserMediaClient(delegate_));
+  return user_media_client_.get();
+}
+
 void TestRunner::SetMockScreenOrientation(const std::string& orientation_str) {
   blink::WebScreenOrientationType orientation;
 
@@ -2539,6 +2548,14 @@ void TestRunner::DisableMockScreenOrientation() {
   mock_screen_orientation_client_->SetDisabled(true);
 }
 
+void TestRunner::DidOpenChooser() {
+  chooser_count_++;
+}
+
+void TestRunner::DidCloseChooser() {
+  chooser_count_--;
+}
+
 void TestRunner::DidAcquirePointerLock() {
   DidAcquirePointerLockInternal();
 }
@@ -2848,7 +2865,7 @@ void TestRunner::CloseWebInspector() {
 }
 
 bool TestRunner::IsChooserShown() {
-  return proxy_->IsChooserShown();
+  return 0 < chooser_count_;
 }
 
 void TestRunner::EvaluateInWebInspector(int call_id,