media: Use bundled Widevine CDM in encrypted media browser tests

chrome/test/base/in_process_browser_test.h

Index: chrome/test/base/in_process_browser_test.h
diff --git a/chrome/test/base/in_process_browser_test.h b/chrome/test/base/in_process_browser_test.h
index 3afebd81fe3484941fca3cf8f1508c71398d8e6c..f7b589385691e247c305b78f94b7b4b3cead4915 100644
--- a/chrome/test/base/in_process_browser_test.h
+++ b/chrome/test/base/in_process_browser_test.h
@@ -212,6 +212,8 @@ class InProcessBrowserTest : public content::BrowserTestBase {
     multi_desktop_test_ = multi_desktop_test;
   }
 
+  void enable_component_update() { enable_component_update_ = true; }
+
   // Runs accessibility checks and sets |error_message| if it fails.
   bool RunAccessibilityChecks(std::string* error_message);
 
@@ -248,6 +250,8 @@ class InProcessBrowserTest : public content::BrowserTestBase {
   // This is reset for every test case.
   bool run_accessibility_checks_for_test_case_;
 
+  bool enable_component_update_;
+
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool* autorelease_pool_;
   std::unique_ptr<ScopedBundleSwizzlerMac> bundle_swizzler_;