Replacing allocate bitmap IPC messages with a new Mojo interface.

content/child/child_shared_bitmap_manager.h

Index: content/child/child_shared_bitmap_manager.h
diff --git a/content/child/child_shared_bitmap_manager.h b/content/child/child_shared_bitmap_manager.h
index feb065bb92a433fb64f549e3c5fd10d27e3ba37e..65bbeb9511f76190c154f808808bc4166b72771e 100644
--- a/content/child/child_shared_bitmap_manager.h
+++ b/content/child/child_shared_bitmap_manager.h
@@ -14,6 +14,7 @@
 #include "base/memory/shared_memory.h"
 #include "cc/resources/shared_bitmap_manager.h"
 #include "content/child/thread_safe_sender.h"
+#include "content/common/shared_memory_allocator.mojom.h"
 
 namespace content {
 
@@ -31,7 +32,9 @@ class SharedMemoryBitmap : public cc::SharedBitmap {
 
 class ChildSharedBitmapManager : public cc::SharedBitmapManager {
  public:
-  ChildSharedBitmapManager(scoped_refptr<ThreadSafeSender> sender);
+  ChildSharedBitmapManager(
+      scoped_refptr<ThreadSafeSender> sender,
+      mojom::SharedMemoryAllocatorPtr shared_memory_allocator);
   ~ChildSharedBitmapManager() override;
 
   // cc::SharedBitmapManager implementation.
@@ -46,9 +49,22 @@ class ChildSharedBitmapManager : public cc::SharedBitmapManager {
   std::unique_ptr<SharedMemoryBitmap> AllocateSharedMemoryBitmap(
       const gfx::Size& size);
 
+  void OnBitmapDeleted(const cc::SharedBitmapId& id);
+
  private:
+  void FinishInitialization();
+
+  void NotifyAllocatedSharedBitmap(
+    base::SharedMemory* memory,
+    const cc::SharedBitmapId& id);
+
   scoped_refptr<ThreadSafeSender> sender_;
 
+  mojom::SharedMemoryAllocatorPtrInfo shared_memory_allocator_ptr_info_;
+  mojom::SharedMemoryAllocatorPtr shared_memory_allocator_;
+
+  base::WeakPtrFactory<ChildSharedBitmapManager> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ChildSharedBitmapManager);
 };