Rename the shared impl files.

ppapi/shared_impl/ppb_graphics_3d_shared.h

Index: ppapi/shared_impl/ppb_graphics_3d_shared.h
diff --git a/ppapi/shared_impl/graphics_3d_impl.h b/ppapi/shared_impl/ppb_graphics_3d_shared.h
similarity index 92%
rename from ppapi/shared_impl/graphics_3d_impl.h
rename to ppapi/shared_impl/ppb_graphics_3d_shared.h
index 07fe967f1ee11c4242993ed3df5c3d7db0b254da..6f3a04f2a0dc51a872ccdbcdc0d4a4ea0d7a23d5 100644
--- a/ppapi/shared_impl/graphics_3d_impl.h
+++ b/ppapi/shared_impl/ppb_graphics_3d_shared.h
@@ -21,7 +21,8 @@ class GLES2Implementation;
 
 namespace ppapi {
 
-class PPAPI_SHARED_EXPORT Graphics3DImpl : public thunk::PPB_Graphics3D_API {
+class PPAPI_SHARED_EXPORT PPB_Graphics3D_Shared
+    : public thunk::PPB_Graphics3D_API {
  public:
   // PPB_Graphics3D_API implementation.
   virtual int32_t GetAttribs(int32_t* attrib_list) OVERRIDE;
@@ -48,8 +49,8 @@ class PPAPI_SHARED_EXPORT Graphics3DImpl : public thunk::PPB_Graphics3D_API {
   void SwapBuffersACK(int32_t pp_error);
 
  protected:
-  Graphics3DImpl();
-  virtual ~Graphics3DImpl();
+  PPB_Graphics3D_Shared();
+  virtual ~PPB_Graphics3D_Shared();
 
   virtual gpu::CommandBuffer* GetCommandBuffer() = 0;
   virtual int32 DoSwapBuffers() = 0;
@@ -67,7 +68,7 @@ class PPAPI_SHARED_EXPORT Graphics3DImpl : public thunk::PPB_Graphics3D_API {
   // Callback that needs to be executed when swap-buffers is completed.
   PP_CompletionCallback swap_callback_;
 
-  DISALLOW_COPY_AND_ASSIGN(Graphics3DImpl);
+  DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Shared);
 };
 
 }  // namespace ppapi