cc: zero/one-copy based on shared memory on IOS uses GL_TEXTURE_2D, not GL_TEXTURE_RECTANGLE_ARB.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index e683a1d5c25baca05e0e7108628f8f031ff46f3c..cc9b1a8ad0aeab44a65cc39ef468d3c0206bbe62 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -1037,9 +1037,15 @@ static void AppendCompositorCommandLineFlags(base::CommandLine* command_line) {
     // The GPU service will always use the preferred type.
     gfx::GpuMemoryBufferType type = supported_types[0];
 
-    // Surface texture backed GPU memory buffers require TEXTURE_EXTERNAL_OES.
-    if (type == gfx::SURFACE_TEXTURE_BUFFER)
-      command_line->AppendSwitch(switches::kUseImageExternal);
+    if (type == gfx::SURFACE_TEXTURE_BUFFER) {

[reveman, 2014/12/03 15:57:19]

please use a switch statement instead.

+      // Surface texture backed GPU memory buffers require TEXTURE_EXTERNAL_OES.
+      command_line->AppendSwitchASCII(switches::kImageTextureTarget,
+                                      "GL_TEXTURE_EXTERNAL_OES");
+    } else if (type == gfx::IO_SURFACE_BUFFER) {
+      // IOSurface backed images require GL_TEXTURE_RECTANGLE_ARB.
+      command_line->AppendSwitchASCII(switches::kImageTextureTarget,
+                                      "GL_TEXTURE_RECTANGLE_ARB");
+    }
   }
 
   // Appending disable-gpu-feature switches due to software rendering list.