Bug 1128170 - Use UniquePtr for TextureClient KeepAlive objects to make sure we don't leak them. r=jrmuizel

gfx/layers/client/TextureClient.cpp

@@ -86,7 +86,6 @@ public:
   TextureChild()
   : mForwarder(nullptr)
   , mTextureClient(nullptr)
-  , mKeep(nullptr)
   , mIPCOpen(false)
   {
   }
@@ -135,7 +134,7 @@ private:
   RefPtr<CompositableForwarder> mForwarder;
   RefPtr<TextureClient> mWaitForRecycle;
   TextureClient* mTextureClient;
-  KeepAlive* mKeep;
+  UniquePtr<KeepAlive> mKeep;
   bool mIPCOpen;
 
   friend class TextureClient;
@@ -154,7 +153,7 @@ TextureChild::ActorDestroy(ActorDestroyReason why)
     mTextureClient->mActor = nullptr;
   }
   mWaitForRecycle = nullptr;
-  delete mKeep;
+  mKeep = nullptr;
 }
 
 // static
@@ -496,11 +495,11 @@ TextureClient::~TextureClient()
 }
 
 void
-TextureClient::KeepUntilFullDeallocation(KeepAlive* aKeep)
+TextureClient::KeepUntilFullDeallocation(UniquePtr<KeepAlive> aKeep)
 {
   MOZ_ASSERT(mActor);
   MOZ_ASSERT(!mActor->mKeep);
-  mActor->mKeep = aKeep;
+  mActor->mKeep = Move(aKeep);
 }
 
 void TextureClient::ForceRemove(bool sync)

gfx/layers/client/TextureClient.h

@@ -403,7 +403,7 @@ public:
    * It's a temporary hack to ensure that DXGI textures don't get destroyed
    * between serialization and deserialization.
    */
-  void KeepUntilFullDeallocation(KeepAlive* aKeep);
+  void KeepUntilFullDeallocation(UniquePtr<KeepAlive> aKeep);
 
   /**
    * Create and init the TextureChild/Parent IPDL actor pair.

gfx/layers/d3d11/TextureD3D11.cpp

@@ -179,9 +179,9 @@ TextureClientD3D11::~TextureClientD3D11()
 {
   if (mActor) {
     if (mTexture) {
-      KeepUntilFullDeallocation(new TKeepAlive<ID3D10Texture2D>(mTexture10));
+      KeepUntilFullDeallocation(MakeUnique<TKeepAlive<ID3D10Texture2D>>(mTexture10));
     } else if (mTexture10) {
-      KeepUntilFullDeallocation(new TKeepAlive<ID3D11Texture2D>(mTexture));
+      KeepUntilFullDeallocation(MakeUnique<TKeepAlive<ID3D11Texture2D>>(mTexture));
     }
   }
 #ifdef DEBUG

gfx/layers/d3d9/TextureD3D9.cpp

@@ -739,7 +739,7 @@ SharedTextureClientD3D9::SharedTextureClientD3D9(ISurfaceAllocator* aAllocator,
 SharedTextureClientD3D9::~SharedTextureClientD3D9()
 {
   if (mTexture && mActor) {
-    KeepUntilFullDeallocation(new TKeepAlive<IDirect3DTexture9>(mTexture));
+    KeepUntilFullDeallocation(MakeUnique<TKeepAlive<IDirect3DTexture9>>(mTexture));
   }
   if (mTexture) {
     gfxWindowsPlatform::sD3D9SharedTextureUsed -= mDesc.Width * mDesc.Height * 4;

gfx/layers/d3d9/TextureD3D9.h

@@ -266,8 +266,10 @@ public:
     mTexture = aTexture;
     mHandle = aSharedHandle;
     mDesc = aDesc;
+    if (mTexture) {
       gfxWindowsPlatform::sD3D9SharedTextureUsed += mDesc.Width * mDesc.Height * 4;
     }
+  }
 
   virtual gfx::IntSize GetSize() const
   {