Replacing allocate bitmap IPC messages with a new Mojo interface.

content/child/child_thread_impl.h

Index: content/child/child_thread_impl.h
diff --git a/content/child/child_thread_impl.h b/content/child/child_thread_impl.h
index 6a2aa5afd763a00aa74469f5e8a7886fc82b2896..d49bb99c3bc052f902f65facf7da97a51e8b187b 100644
--- a/content/child/child_thread_impl.h
+++ b/content/child/child_thread_impl.h
@@ -55,7 +55,6 @@ class ClientDiscardableSharedMemoryManager;
 namespace content {
 class ChildHistogramMessageFilter;
 class ChildResourceMessageFilter;
-class ChildSharedBitmapManager;
 class FileSystemDispatcher;
 class InProcessChildThreadParams;
 class NotificationDispatcher;
@@ -135,10 +134,6 @@ class CONTENT_EXPORT ChildThreadImpl
                          base::ThreadPriority priority);
 #endif
 
-  ChildSharedBitmapManager* shared_bitmap_manager() const {
-    return shared_bitmap_manager_.get();
-  }
-
   discardable_memory::ClientDiscardableSharedMemoryManager*
   discardable_shared_memory_manager() const {
     return discardable_shared_memory_manager_.get();
@@ -328,8 +323,6 @@ class CONTENT_EXPORT ChildThreadImpl
 
   scoped_refptr<PushDispatcher> push_dispatcher_;
 
-  std::unique_ptr<ChildSharedBitmapManager> shared_bitmap_manager_;
-
   std::unique_ptr<discardable_memory::ClientDiscardableSharedMemoryManager>
       discardable_shared_memory_manager_;