Removing singleton property of MediaStreamManager and creating thread first when needed.

content/browser/renderer_host/media/video_capture_host_unittest.cc

Index: content/browser/renderer_host/media/video_capture_host_unittest.cc
diff --git a/content/browser/renderer_host/media/video_capture_host_unittest.cc b/content/browser/renderer_host/media/video_capture_host_unittest.cc
index 9e5488196d7e76621394c0fa008121aa2026487e..b1153637a8070df76ea0aeb2eb518dca77a4ce2a 100644
--- a/content/browser/renderer_host/media/video_capture_host_unittest.cc
+++ b/content/browser/renderer_host/media/video_capture_host_unittest.cc
@@ -15,6 +15,7 @@
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/video_capture_host.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
+#include "content/browser/resource_context.h"
 #include "content/common/media/video_capture_messages.h"
 #include "media/video/capture/video_capture_types.h"
 
@@ -67,9 +68,37 @@ class DumpVideo {
   int expected_size_;
 };
 
+namespace content {
+// Test version of ResourceContext
+class MockVideoCaptureResourceContext : public ResourceContext {
+ public:
+  MockVideoCaptureResourceContext() {}
+  virtual ~MockVideoCaptureResourceContext() {}
+
+  virtual media_stream::MediaStreamManager* media_stream_manger() const {
+    return media_stream_manager_.get();
+  }
+
+  void set_media_stream_manager(
+      media_stream::MediaStreamManager* media_stream_manager) {
+    media_stream_manager_ = media_stream_manager;
+  }
+
+ private:
+  // Pure virtual in ResourceContext.
+  virtual void EnsureInitialized() const {}
+
+  scoped_refptr<media_stream::MediaStreamManager> media_stream_manager_;
+};
+
+}  // namespace content
+
 class MockVideoCaptureHost : public VideoCaptureHost {
  public:
-  MockVideoCaptureHost() : return_buffers_(false), dump_video_(false) {}
+  explicit MockVideoCaptureHost(content::ResourceContext* resource_context)
+      : VideoCaptureHost(resource_context),
+        return_buffers_(false),
+        dump_video_(false) {}
   virtual ~MockVideoCaptureHost() {
     STLDeleteContainerPairSecondPointers(filled_dib_.begin(),
                                          filled_dib_.end());
@@ -190,14 +219,25 @@ class VideoCaptureHostTest : public testing::Test {
   virtual void SetUp() {
     // Create a message loop so VideoCaptureHostTest can use it.
     message_loop_.reset(new MessageLoop(MessageLoop::TYPE_IO));
+
+    // ResourceContext must be created on the UI thread.
+    ui_thread_.reset(new BrowserThread(BrowserThread::UI, message_loop_.get()));
+    resource_context_.reset(new content::MockVideoCaptureResourceContext());
+
+    // MediaStreamManager must be created on the IO thread.
     io_thread_.reset(new BrowserThread(BrowserThread::IO, message_loop_.get()));
+
+    // Create a MediaStreamManager ad hand over ownership to ResourceContext.
+    media_stream::MediaStreamManager* media_stream_manager =
+        new media_stream::MediaStreamManager();
+    resource_context_->set_media_stream_manager(media_stream_manager);
+
     // Setup the VideoCaptureManager to use fake video capture device.
 #ifndef TEST_REAL_CAPTURE_DEVICE
-    media_stream::VideoCaptureManager* manager =
-        media_stream::MediaStreamManager::Get()->video_capture_manager();
-    manager->UseFakeDevice();
+    resource_context_->media_stream_manager()->video_capture_manager()->
+        UseFakeDevice();
 #endif
-    host_ = new MockVideoCaptureHost();
+    host_ = new MockVideoCaptureHost(resource_context_.get());
 
     // Simulate IPC channel connected.
     host_->OnChannelConnected(base::GetCurrentProcId());
@@ -223,6 +263,7 @@ class VideoCaptureHostTest : public testing::Test {
     SyncWithVideoCaptureManagerThread();
 
     io_thread_.reset();
+    ui_thread_.reset();
   }
 
   // Called on the VideoCaptureManager thread.
@@ -231,8 +272,9 @@ class VideoCaptureHostTest : public testing::Test {
   }
 
   // Called on the main thread.
-  static void PostQuitOnVideoCaptureManagerThread(MessageLoop* message_loop) {
-    media_stream::MediaStreamManager::Get()->video_capture_manager()->
+  static void PostQuitOnVideoCaptureManagerThread(
+      MessageLoop* message_loop, content::ResourceContext* resource_context) {
+    resource_context->media_stream_manager()->video_capture_manager()->
         GetMessageLoop()->PostTask(FROM_HERE,
                                    NewRunnableFunction(
                                        &PostQuitMessageLoop, message_loop));
@@ -246,7 +288,8 @@ class VideoCaptureHostTest : public testing::Test {
   void SyncWithVideoCaptureManagerThread() {
     message_loop_->PostTask(
         FROM_HERE, NewRunnableFunction(&PostQuitOnVideoCaptureManagerThread,
-                                       message_loop_.get()));
+                                       message_loop_.get(),
+                                       resource_context_.get()));
     message_loop_->Run();
   }
 
@@ -342,7 +385,9 @@ class VideoCaptureHostTest : public testing::Test {
   scoped_refptr<MockVideoCaptureHost> host_;
  private:
   scoped_ptr<MessageLoop> message_loop_;
+  scoped_ptr<BrowserThread> ui_thread_;
   scoped_ptr<BrowserThread> io_thread_;
+  scoped_ptr<content::ResourceContext> resource_context_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureHostTest);
 };