gpu: Avoid scissor test for glCopyTextureCHROMIUM if possible.

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h

Index: gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
diff --git a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
index 8cba517052abd4749c1198fc7545bab66fd1b942..1910d3b1b35b72e71897629ee2d0f5434e390850 100644
--- a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
+++ b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
@@ -98,6 +98,10 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                              GLuint dest_id,
                              GLint xoffset,
                              GLint yoffset,
+                             GLint x,
+                             GLint y,
+                             GLsizei width,
+                             GLsizei height,
                              GLsizei dest_width,
                              GLsizei dest_height,
                              GLsizei source_width,
@@ -105,11 +109,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                              bool flip_y,
                              bool premultiply_alpha,
                              bool unpremultiply_alpha,
-                             const GLfloat transform_matrix[16],
-                             GLint scissor_x,
-                             GLint scissor_y,
-                             GLsizei scissor_width,
-                             GLsizei scissor_height);
+                             const GLfloat transform_matrix[16]);
 
   bool initialized_;
   typedef std::vector<GLuint> ShaderVector;