media: Use bundled Widevine CDM in encrypted media browser tests

chrome/test/base/in_process_browser_test.h

 // 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.
 
 #ifndef CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 #define CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 42 matching lines @@
 //   state changes you'll need to run the message loop from your test method.
 //   For example, if you need to wait till a find bar has completely been shown
 //   you'll need to invoke content::RunMessageLoop. When the message bar is
 //   shown, invoke MessageLoop::current()->QuitWhenIdle() to return control back
 //   to your test method.
 // . If you subclass and override SetUp, be sure and invoke
 //   InProcessBrowserTest::SetUp. (But see also SetUpOnMainThread,
 //   SetUpInProcessBrowserTestFixture and other related hook methods for a
 //   cleaner alternative).
 //
-// Following three hook methods are called in sequence before calling
+// The following four hook methods are called in sequence before calling
 // BrowserMain(), thus no browser has been created yet. They are mainly for
 // setting up the environment for running the browser.
 // . SetUpUserDataDirectory()
 // . SetUpCommandLine()
+// . SetUpDefaultCommandLine()
 // . SetUpInProcessBrowserTestFixture()
 //
+// Default command line switches are added in the default implementation of
+// SetUpDefaultCommandLine(). Addtional command line switches can be simply
+// appended in SetUpCommandLine() without the need to invoke
+// InProcessBrowserTest::SetUpCommandLine(). If a test needs to change the
+// default command line, it can override SetUpDefaultCommandLine(), where it
+// should invoke InProcessBrowserTest::SetUpDefaultCommandLine() to get the
+// default swtiches, and modify them as needed.
+//
 // SetUpOnMainThread() is called just after creating the default browser object
 // and before executing the real test code. It's mainly for setting up things
 // related to the browser object and associated window, like opening a new Tab
 // with a testing page loaded.
 //
 // TearDownOnMainThread() is called just after executing the real test code to
 // do necessary cleanup before the browser is torn down.
 //
 // TearDownInProcessBrowserTestFixture() is called after BrowserMain() exits to
 // cleanup things setup for running the browser.
@@ skipping 48 matching lines @@
   // Convenience methods for adding tabs to a Browser.
   void AddTabAtIndexToBrowser(Browser* browser,
                               int index,
                               const GURL& url,
                               ui::PageTransition transition,
                               bool check_navigation_success);
   void AddTabAtIndex(int index,
                      const GURL& url,
                      ui::PageTransition transition);
 
+  // Setups default command line that will be used to launch the child browser
+  // process with an in-process test. Called by SetUp() after SetupCommandLine()
+  // to add default commandline switches. A default implementation is provided
+  // in this class. If a test does not want to use the default implementation,
+  // it should override this method.
+  virtual void SetUpDefaultCommandLine(base::CommandLine* command_line);
+
   // Initializes the contents of the user data directory. Called by SetUp()
   // after creating the user data directory, but before any browser is launched.
   // If a test wishes to set up some initial non-empty state in the user data
   // directory before the browser starts up, it can do so here. Returns true if
   // successful.
   virtual bool SetUpUserDataDirectory() WARN_UNUSED_RESULT;
 
   // BrowserTestBase:
   void RunTestOnMainThreadLoop() override;
 
@@ skipping 52 matching lines @@
 #endif  // OS_MACOSX
 
   void set_exit_when_last_browser_closes(bool value) {
     exit_when_last_browser_closes_ = value;
   }
 
   void set_open_about_blank_on_browser_launch(bool value) {
     open_about_blank_on_browser_launch_ = value;
   }
 
-  // This must be called before RunTestOnMainThreadLoop() to have any effect.
-  void set_multi_desktop_test(bool multi_desktop_test) {
-    multi_desktop_test_ = multi_desktop_test;
-  }
-
   // Runs accessibility checks and sets |error_message| if it fails.
   bool RunAccessibilityChecks(std::string* error_message);
 
  private:
   // Creates a user data directory for the test if one is needed. Returns true
   // if successful.
   virtual bool CreateUserDataDirectory() WARN_UNUSED_RESULT;
 
   // Quits all open browsers and waits until there are no more browsers.
   void QuitBrowsers();
 
-  // Prepare command line that will be used to launch the child browser process
-  // with an in-process test.
-  void PrepareTestCommandLine(base::CommandLine* command_line);
-
   // Browser created from CreateBrowser.
   Browser* browser_;
 
   // Temporary user data directory. Used only when a user data directory is not
   // specified in the command line.
   base::ScopedTempDir temp_user_data_dir_;
 
   // True if we should exit the tests after the last browser instance closes.
   bool exit_when_last_browser_closes_;
 
   // True if the about:blank tab should be opened when the browser is launched.
   bool open_about_blank_on_browser_launch_;
 
-  // True if this is a multi-desktop test (in which case this browser test will
-  // not ensure that Browsers are only created on the tested desktop).
-  bool multi_desktop_test_;
-
   // True if the accessibility test should run for a particular test case.
   // This is reset for every test case.
   bool run_accessibility_checks_for_test_case_;
 
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool* autorelease_pool_;
   std::unique_ptr<ScopedBundleSwizzlerMac> bundle_swizzler_;
 #endif  // OS_MACOSX
 
 #if defined(OS_WIN)
   std::unique_ptr<base::win::ScopedCOMInitializer> com_initializer_;
 #endif
 };
 
 #endif  // CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_