Defer initializing the CopyTextureCHROMIUMResourceManager

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
===================================================================
--- gpu/command_buffer/service/gles2_cmd_decoder.cc	(revision 138818)
+++ gpu/command_buffer/service/gles2_cmd_decoder.cc	(working copy)
@@ -2017,10 +2017,6 @@
   }
   CHECK_GL_ERROR();
 
-  copy_texture_CHROMIUM_.reset(new CopyTextureCHROMIUMResourceManager());
-  copy_texture_CHROMIUM_->Initialize();
-  CHECK_GL_ERROR();
-
   disallowed_features_ = disallowed_features;
 
   vertex_attrib_manager_.reset(new VertexAttribManager());
@@ -8506,6 +8502,17 @@
     return;
   }
 
+  // Defer initializing the CopyTextureCHROMIUMResourceManager until it is
+  // needed because it takes 10s of milliseconds to initialize.
+  if (!copy_texture_CHROMIUM_.get()) {
+    CopyRealGLErrorsToWrapper();
+    copy_texture_CHROMIUM_.reset(new CopyTextureCHROMIUMResourceManager());
+    copy_texture_CHROMIUM_->Initialize();
+    RestoreCurrentFramebufferBindings();
+    if (PeekGLError() != GL_NO_ERROR)
+      return;
+  }
+
   GLenum dest_type;
   GLenum dest_internal_format;
   bool dest_level_defined = dest_info->GetLevelSize(GL_TEXTURE_2D, level,