Revert of Allow creating GLImage-backed textures with glTexStorage2D.

gpu/GLES2/extensions/CHROMIUM/CHROMIUM_texture_buffer.txt

Index: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_texture_buffer.txt
diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_texture_buffer.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_texture_buffer.txt
deleted file mode 100644
index 789ef83a5dd5fa78e18ab907c21c582a28c29d63..0000000000000000000000000000000000000000
--- a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_texture_buffer.txt
+++ /dev/null
@@ -1,128 +0,0 @@
-Name
-
-    CHROMIUM_texture_buffer
-
-Name Strings
-
-    GL_CHROMIUM_texture_buffer
-
-Contributors
-
-    John Bauman, Google
-
-Contact
-
-    John Bauman, Google (jbauman 'at' google.com)
-
-Status
-
-    In Progress
-
-Version
-
-    Last Modified Date:  June 19, 2017
-    Version:             1
-
-Number
-
-    OpenGL ES Extension #???
- 
-Dependencies
-
-    This extension is written against the OpenGL ES 2.0 Specification.
-    This extension depends on EXT_texture_storage.
-    CHROMIUM_schedule_ca_layer affects the definition of this extension.
-    EXT_texture_format_BGRA8888 affects the definition of this extension.
-
-Overview
-
-    This allows clients to specify that alternative texture backings
-    can be used which may be drawn into overlays.
-
-IP Status
-
-    No known IP claims.
-
-New Procedures and Functions
-
-    None
-
-New Tokens
-
-    Accepted as a value for <pname> for the TexParameter{if} and 
-    TexParameter{if}v commands and for the <value> parameter of
-    GetTexParameter{if}v: 
-
-        TEXTURE_BUFFER_USAGE_CHROMIUM           0x78FD
-
-    Accepted as a value to <param> for the TexParameter{if} and to <params>
-    for the TexParameter{if}v commands with a <pname> of
-    TEXTURE_BUFFER_USAGE_CHROMIUM; returned as possible values for <data> when
-    GetTexParameter{if}v is queried with a <value> of
-    TEXTURE_BUFFER_USAGE_CHROMIUM:
-
-        NONE                                    0x0000
-        TEXTURE_BUFFER_SCANOUT_CHROMIUM         0x78FE
-
-Additions to Chapter 2 of the OpenGL ES 2.0 Specification (OpenGL ES Operation)
-
-    None
-
-Additions to Chapter 3 of the OpenGL ES 2.0 Specification (Rasterization)
-
-    Add a new row to Table 3.10 (Texture parameters and their values):
-    Possible values for <params> when <pname> is TEXTURE_BUFFER_USAGE_CHROMIUM
-    are:
-
-    NONE - the default. The texture may not be used as an overlay.
-
-    TEXTURE_BUFFER_SCANOUT_CHROMIUM - this texture may be used as an overlay."
-
-    Modify section 3.7.12 (Texture State) and place the last 3 sentences
-    with the following:
-
-    "Next, there are the three sets of texture properties; each consists of
-    the selected minification and magnification filters, the wrap modes for
-    <s> and <t>, and the usage flags. In the initial state, the value assigned
-    to TEXTURE_MIN_FILTER is NEAREST_MIPMAP_LINEAR, and the value for 
-    TEXTURE_MAG_FILTER is LINEAR. <s> and <t> wrap modes are both set to
-    REPEAT. The initial value for TEXTURE_BUFFER_USAGE_CHROMIUM is NONE."
-
-    Add to the end of the subsection called "Immutable-format texture images":
-
-    "If <levels> is not 1 and TEXTURE_BUFFER_USAGE_CHROMIUM is
-    TEXTURE_BUFFER_SCANOUT_CHROMIUM, generate an INVALID_OPERATION error.
-    
-    If <depth> is greater than 1 and TEXTURE_BUFFER_USAGE_CHROMIUM is
-    TEXTURE_BUFFER_SCANOUT_CHROMIUM, generate an INVALID_OPERATION error.
-
-    If <internal_format> is not RGBA8_OES, BGRA8_EXT, or RGBA16F, generate an
-    INVALID_ENUM error."
-
-Dependencies on CHROMIUM_schedule_ca_layer
-
-    Of textures created with TexStorage2DEXT or TexImage2D, only textures
-    specified with TEXTURE_BUFFER_SCANOUT_CHROMIUM may be used with
-    glScheduleCALayerCHROMIUM.
-
-Dependencies on EXT_texture_format_BGRA8888
-
-    If EXT_texture_format_BGRA8888 is not supported, deleted all references to
-    BGRA8_EXT.
-
-Errors
-
-    If TexParameter{if} or TexParamter{if}v is called with a <pname> of
-    TEXTURE_BUFFER_USAGE_CHROMIUM and the value of <param> or <params> is not
-    NONE or TEXTURE_BUFFER_SCANOUT_CHROMIUM the error INVALID_VALUE is
-    generated.
-
-Issues
-
-Revision History
-
-    Rev.    Date      Author     Changes
-    ----  ----------- ---------  ----------------------------------------
-      1   19 Jun 2017 jbauman    Initial revision
-   
-