During image destroy, delete textures only if we have a GL context.

ui/gl/gl_image_memory.h

Index: ui/gl/gl_image_memory.h
diff --git a/ui/gl/gl_image_memory.h b/ui/gl/gl_image_memory.h
index e91008a4435d16639a2380479403e0363ec3af83..668ee522be42c3dd70cf2ed7dfd70445d1162d82 100644
--- a/ui/gl/gl_image_memory.h
+++ b/ui/gl/gl_image_memory.h
@@ -22,7 +22,7 @@ class GL_EXPORT GLImageMemory : public GLImage {
   bool Initialize(const unsigned char* memory);
 
   // Overridden from GLImage:
-  virtual void Destroy() OVERRIDE;
+  virtual void Destroy(bool have_context) OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
   virtual bool BindTexImage(unsigned target) OVERRIDE;
   virtual void ReleaseTexImage(unsigned target) OVERRIDE {}