gpu: Remove map_image field from gpu::Capabilities.

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index e0b0cb82f60b36b2a9e5f3f39217aaec0112f9d4..852bd3ad04e2a1c96cd3e16dc3075540c591ef33 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -86,7 +86,8 @@ GLES2Implementation::GLES2Implementation(
       ShareGroup* share_group,
       TransferBufferInterface* transfer_buffer,
       bool bind_generates_resource,
-      GpuControl* gpu_control)
+      GpuControl* gpu_control,
+      const Capabilities& capabilities)
     : helper_(helper),
       transfer_buffer_(transfer_buffer),
       angle_pack_reverse_row_order_status_(kUnknownExtensionStatus),
@@ -111,7 +112,7 @@ GLES2Implementation::GLES2Implementation(
       use_count_(0),
       error_message_callback_(NULL),
       gpu_control_(gpu_control),
-      capabilities_(gpu_control->GetCapabilities()),
+      capabilities_(capabilities),
       weak_ptr_factory_(this) {
   DCHECK(helper);
   DCHECK(transfer_buffer);
@@ -2142,11 +2143,8 @@ const GLubyte* GLES2Implementation::GetStringHelper(GLenum name) {
       case GL_EXTENSIONS:
         str += std::string(str.empty() ? "" : " ") +
             "GL_CHROMIUM_flipy "
+            "GL_CHROMIUM_map_image "
             "GL_EXT_unpack_subimage";
-        if (capabilities_.map_image) {
-          // The first space character is intentional.
-          str += " GL_CHROMIUM_map_image";
-        }
         break;
       default:
         break;