<webview>: First stab at implementing media permission request for guests.

chrome/browser/extensions/web_view_browsertest.cc

Index: chrome/browser/extensions/web_view_browsertest.cc
diff --git a/chrome/browser/extensions/web_view_browsertest.cc b/chrome/browser/extensions/web_view_browsertest.cc
index d1d78e9e4c35263d552fdd402849f0551c37f788..cc3fd9a258dcc4bd8019be705d12789f580060f9 100644
--- a/chrome/browser/extensions/web_view_browsertest.cc
+++ b/chrome/browser/extensions/web_view_browsertest.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/automation/automation_util.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
@@ -13,8 +14,10 @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "chrome/test/base/test_launcher_utils.h"
+#include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/web_contents_delegate.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/fake_speech_recognition_manager.h"
 #include "ui/compositor/compositor_setup.h"
@@ -23,6 +26,38 @@
 using prerender::PrerenderLinkManager;
 using prerender::PrerenderLinkManagerFactory;
 
+// This class intercepts media access request from the embedder. The request
+// should be triggered only if the embedder API (from tests) allows the request
+// in Javascript.
+// We do not issue the actual media request; the fact that the request reached
+// embedder's WebContents is good enough for our tests. This is also to make
+// the test run successfully on trybots.
+class MockWebContentsDelegate : public content::WebContentsDelegate {
+ public:
+  MockWebContentsDelegate() : requested_(false) {}
+  virtual ~MockWebContentsDelegate() {}
+
+  virtual void RequestMediaAccessPermission(
+      content::WebContents* web_contents,
+      const content::MediaStreamRequest& request,
+      const content::MediaResponseCallback& callback) OVERRIDE {
+    requested_ = true;
+    if (message_loop_runner_)
+      message_loop_runner_->Quit();
+  }
+
+  void WaitForSetMediaPermission() {
+    if (requested_)
+      return;
+    message_loop_runner_ = new content::MessageLoopRunner;
+    message_loop_runner_->Run();
+  }
+
+ private:
+  bool requested_;
+  scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
+};
+
 class WebViewTest : public extensions::PlatformAppBrowserTest {
  protected:
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
@@ -676,6 +711,51 @@ IN_PROC_BROWSER_TEST_F(WebViewTest, IndexedDBIsolation) {
   ExecuteScriptWaitForTitle(default_tag_contents1, script, "db not found");
 }
 
+IN_PROC_BROWSER_TEST_F(WebViewTest, MediaAccessAPIDeny) {
+  ASSERT_TRUE(StartTestServer());  // For serving guest pages.
+  ASSERT_TRUE(RunPlatformAppTest(
+      "platform_apps/web_view/media_access/deny")) << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(WebViewTest, MediaAccessAPIAllow) {
+  ASSERT_TRUE(StartTestServer());  // For serving guest pages.
+  ExtensionTestMessageListener launched_listener("Launched", false);
+  LoadAndLaunchPlatformApp("web_view/media_access/allow");
+  ASSERT_TRUE(launched_listener.WaitUntilSatisfied());
+
+  content::WebContents* embedder_web_contents =
+      GetFirstShellWindowWebContents();
+  ASSERT_TRUE(embedder_web_contents);
+  MockWebContentsDelegate* mock = new MockWebContentsDelegate;
+  embedder_web_contents->SetDelegate(mock);
+
+  const size_t num_tests = 4;
+  std::string test_names[num_tests] = {
+    "testAllow",
+    "testAllowAndThenDeny",
+    "testAllowTwice",
+    "testAllowAsync",
+  };
+  for (size_t i = 0; i < num_tests; ++i) {
+    ExtensionTestMessageListener done_listener("DoneMediaTest", false);
+    EXPECT_TRUE(
+        content::ExecuteScript(
+            embedder_web_contents,
+            base::StringPrintf("startAllowTest('%s')",
+                               test_names[i].c_str())));
+    done_listener.WaitUntilSatisfied();
+
+    std::string result;
+    EXPECT_TRUE(
+        content::ExecuteScriptAndExtractString(
+            embedder_web_contents,
+            "window.domAutomationController.send(getTestStatus())", &result));
+    ASSERT_EQ(std::string("PASSED"), result);
+
+    mock->WaitForSetMediaPermission();
+  }
+}
+
 IN_PROC_BROWSER_TEST_F(WebViewTest, SpeechRecognition) {
   ASSERT_TRUE(StartTestServer());
   std::string host_str("localhost");  // Must stay in scope with replace_host.