Delete unused GetBitMap() in fx_agg_driver

Review-Url: https://codereview.chromium.org/2353143002
diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index bb3d7af..6271c10 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -446,10 +446,6 @@
   return m_pBitmap->GetBuffer();
 }
 
-const CFX_DIBitmap* CFX_AggDeviceDriver::GetBitmap() const {
-  return m_pBitmap;
-}
-
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
 void CFX_AggDeviceDriver::InitPlatform() {}
 
diff --git a/core/fxge/agg/fx_agg_driver.h b/core/fxge/agg/fx_agg_driver.h
index 47ae470..6dcd44c 100644
--- a/core/fxge/agg/fx_agg_driver.h
+++ b/core/fxge/agg/fx_agg_driver.h
@@ -107,7 +107,6 @@
   void SetClipMask(agg::rasterizer_scanline_aa& rasterizer);
 
   virtual uint8_t* GetBuffer() const;
-  const CFX_DIBitmap* GetBitmap() const;
 
  private:
   CFX_DIBitmap* m_pBitmap;